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ECOC 2020 will use an alternative format to stimulate interaction and to offer you, as an author, the best visibility and chances to get in touch with your peers.

We will use the full flexibility of the virtual format and try to cover all time-zones.

All accepted papers, extended papers and invited papers are scheduled in technical sessions comprising of 4 to 8 papers. These technical sessions are presented in 11 parallel virtual sessions running over the 4 ECOC 2020 days (Monday 7 December till Thursday 10 December). All of these technical sessions are scheduled a first time from 08:00 till 11:00 in the morning (Central European Time) and then exactly repeated the same day in the early evening from 18:00 till 21:00 (Central European Time).

As morning and evening sessions will be identical, this concept allows participants from nearly all time zones to attend at least 1 of these in a comfortable time-frame for themselves.

 

Access the agenda for ECOC 2020 on the Whova Platform which will be used during ECOC 2020 to stream the sessions.

agenda

 

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All times below are Central European Time (at the time of ECOC 2020 this will be UTC+1)

ProgGlance

List of all accepted papers in ECOC 2020 (grouped per session ordered according planned timing)

Session code:

Session Menu:

SC01 - Novel Fibres, Fibre Devices and Fibre Amplifiers 

Tu1A: Amplifier design
Tu2A: MM systems and characterization
We1A: Scattering, coupling and sensing
We2A: Nonlinear Optics
Th1A: Multi Core Fiber
Th2A: Fiber amplifiers

           

SC07 – Photonics for RF and Free Space Optics applications 

Tu1G: Photonics-assisted 5G coverage
Tu2G: Indoor Optical Wireless Commuincations
We1G: Satellite communications
We2G: Free Space Optics
Th1G: Ananolgue Radio over Fiber
Th2G: Beam forming and Sub-THz

SC02 - Optoelectronic Devices and Technologies 

Mo1B: Optical sources
Mo2B: High speed transmitters
Tu1B: Modulators
Tu2B: Passive devices
We1B: Lasers
We2B: Detectors

 

SC08 - Core and metro networks 

Tu1H: SDM and Multiband High capacity systems
Tu2H: Dimensioning of Metro and High capacity networks
We1H: Network performance monitoring
We2H: High-capacity network architecture
Th1H: Software and AI based techniques in core networks
Th2H: Novel functions for optical core networks and subsystems

SC03 - Integrated and co-integrated circuits 

Mo1C: Hybrid integration
Mo2C: High density electro-optical packaging
Tu1C: Photonic circuits outlook
Tu2C: High functionality silicon photonics
We1C: Transmitters and receivers
We2C: Complex integrated optic circuits

 

SC09 – Access, Indoor and Data Center and Optical Networks 

Tu1J: Passive optical networks I
Tu2J: Passive optical networks II
We1J: Optical Access Networks and 5G I
We2J: Optical Access Networks and 5G II
Th1J: Optical Networks for DataCenters

SC04 – Techniques for digitally enhancing optical communication 

Mo2D: Modulation and coding
Tu1D: Transmitter optimisation
Tu2D: Monitoring and Charactersation Techniques
We1D: Machine learning for transceivers
We2D: Equalizers and decoders for IMDD systems
Th1D: End to end and supervised learning of optical channels
Th2D: Phase Retrieval and Receiver optimisation

 

SC10 - Architecture, Control and Management of optical networks 

Mo1K: Machine Learning for Optical Networks (I)
Mo2K: Machine Learning for Optical Networks (II)
Tu1K: Low Latency and on-demand Networking
Tu2K: Network Telemetry
We1K: Network Control and Management
We2K: Network Planning
Th1K: Advanced Networking

SC05 - Optical Transmission systems 

Mo1E: High capacity systems
Mo2E: SDM transmission systems
Tu1E: Transmission with direct detection
Tu2E: Long haul and submarine transmission
We1E: Novel concepts in optical communications
We2E: Unrepeatered transmission

 

CLEO/Europe Focus Meeting 

We1L: Neuromorphic Computing
We2L: Nano and quantum photonics
Th1L: Novel laser sources
Th2L: Novel photonic device concepts

 

SC06 - Theory of Optical Communications 

Tu1F: Nonlinear fiber-optic propagation
Tu2F: Advanced tranmission concepts
We1F: Shaping-based communications
We2F: Long haul transmission

 

DEMO Session 

DEMO Session (all topics)

 

 

Opening Session

13:45 (AM Session) & (PM Session)

Mo3A-1: Opening Remarks
Van Daele, Peter (1); Koonen A.M.J. (2)
(1) imec - Ghent University (Belgium), (2) TU Eindhoven (The Netherlands)
Abstract: ECOC 2020 is still hosted in Belgium... but 100% virtual. Unfortunately, you will miss our local flavours, but we still offer high-level plenary talks, tutorials, invited speakers and most of all... papers describing your own top-level research work and results. This is our Welcome note

14:00 (AM Session) & (PM Session)

Mo3A-2: Keynote 1: H2020 - lessons learned and Horizon Europe – what is to come?
Paquet, Jean-Eric
DG Research & Innovation, European Commission (Belgium)
Abstract: European Union’s research & innovation framework programme has been delivering value for the economy and the society for over 35 years. Among other areas, it supports the advance of photonic technologies and their wide applications, mainly through partnerships between the public and the private sector. The Director General of DG Research & Innovation of the European Commission will reflect on the lessons learned from the current framework programme, Horizon 2020, and present novelties in its ever more impactful successor, Horizon Europe. These include new approaches to the programme’s design, partnerships and missions, and the launch of the European Innovation Council – supporting the green and digital transitions and a more resilient Europe.

14:30 (AM Session) & (PM Session)

Mo3A-3: Keynote 2: The dawn of quantum networks
Hanson, Ronald
QuTech and Kavli Institute of Nanoscience, Delft University of Technology (The Netherlands)
Abstract: Entanglement – the property that particles can share a single quantum state - is arguably the most counterintuitive yet potentially most powerful element in quantum theory. The non-local features of quantum theory are highlighted by the conflict between entanglement and local causality discovered by John Bell. Decades of Bell inequality tests, culminating in a series of loophole-free tests in 2015, have confirmed the non-locality of nature. Future quantum networks may harness these unique features of entanglement in a range of exciting applications, such as quantum computation and simulation, secure communication, enhanced metrology for astronomy and time-keeping as well as fundamental investigations. To fulfill these promises, a strong worldwide effort is ongoing to gain precise control over the full quantum dynamics of multi-particle nodes and to wire them up using quantum-photonic channels. Here I will introduce the field of quantum networks and discuss future plans and ongoing work with the specific target of realizing the first multi-node network wired by quantum entanglement, including first primitive network experiments using diamond-based quantum network nodes.

15:30 (AM Session) & (PM Session)

Mo3A-4: Keynote 3: Seeing the invisible – Optical Coherence Tomography in Medicine
Drexler, Wolfgang Drexler
Center for Medical Physics and Biomedical Engineering, Medical University Vienna (Austria)
Abstract: In the last 30 years optical coherence tomography (OCT) has established itself as a novel, unique non-invasive, optical medical diagnostic imaging modality, enabling unprecedented in vivo ‘visualization of the invisible’, i.e. the visualization of internal tissue structure in a variety of biological systems that cannot be seen with the naked eye. Imaging the eye has been the most successful and commercially most active medical field for OCT so far, but several other OCT applications, e.g. in the heart, internal organs, brain or skin are also extremely promising. In addition, improved versions of OCT and combination with other optical imaging techniques are under development that provide information about the function of tissue as well as molecular and chemical information of the investigated tissue which are on the verge of significantly improving diagnosis and therapy control in medicine.

16:00 (AM Session) & (PM Session)

Mo3A-5: Keynote 4: Optical Communications – Enabling the Inter Planetary Network
Velazco, Jose E.
Advanced RF & Optical Technologies Group, NASA’s Jet Propulsion Laboratory (USA)
Abstract: The inter planetary network (IPN) - a large sensor and communications platform along the solar system - could be the basis for the space internet. The IPN consists of thousands of small spacecrafts strategically deployed around planetary bodies in the solar system where each spacecraft is furnished with fast communications and sensor systems. The IPN spacecraft, furnished with suitable miniaturized sensors, could form a remarkable deep space platform for unique observation of the solar system, stars, galaxies and the universe. A key feature of the IPN architecture is the use of swarms of optically-interconnected spacecrafts as network units. High-speed intra-swarm communications is achieved via omnidirectional optical links. Future space missions, including spacecraft, landers, rovers and astronauts as well as Earth stations, could achieve very fast connectivity among themselves via the IPN. It is envisioned that the IPN will be the basis for the space internet. Several technologies being developing at JPL to enable the inter planetary network will be discussed. The technologies under development include a novel inter-spacecraft optical communicator and compact ground stations. I will also discuss potential IPN network architectures that could allow for fast connectivity and the management of such a network.

 

SC01 - Novel Fibres, Fibre Devices and Fibre Amplifiers

 

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Session Tu1A: Amplifier design
Tuesday 08 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Borel, Peter I.
Chair PM-session: Sumetsky, Michael

08:00 (AM Session) & 18:00 (PM Session)

Tu1A-1: (Invited) Machine Learning Assisted Hybrid EDFA-Raman Amplifier Design for C+L Bands
Ionescu, Maria; Ghazisaeidi, Amirhossein; Renaudier, Jeremie
Nokia Bell Labs (France)
Abstract: We address the different design challenges and applications of machine learning to modeling optical amplifiers. The problem of accuracy in designing neural networks cannot be simplified to the requirement of large training data sets, but it is specific to the application and the model selection.

08:30 (AM Session) & 18:30 (PM Session)

Tu1A-4: Machine learning-based EDFA Gain Model Generalizable to Multiple Physical Devices
Da Ros, Francesco; de Moura, Uiara; Yankov, Metodi
DTU Fotonik, Technical University of Denmark (Denmark)
Abstract: We report a neural-network based erbium-doped fiber amplifier (EDFA) gain model built from experimental measurements. The model shows low gain-prediction error for both the same device used for training (MSE ≤ 0.04 dB2) and different physical units of the same make (generalization MSE ≤ 0.06 dB2)

08:40 (AM Session) & 18:40 (PM Session)

Tu1A-5: Gain Instability in Forward-Pumped Raman Amplifier and Its Suppression Utilizing a Dual-Arm Depolarizer for Pump Light
Kawakami, Hiroto; Kuwahara, Shoichiro; Kisaka, Yoshiaki
NTT Network Innovation Laboratories (Japan)
Abstract: The requirements for the depolarizer of the pump light used in a forward-pumped Raman amplifier were clarified. Management of the optical phases is strongly required to enable stable gain. Utilizing a dual-arm depolarizer, we successfully improved the 16-QAM transmission specifications.

08:50 (AM Session) & 18:50 (PM Session)

Tu1A-6: Gain Design of Few-Mode Fiber Raman Amplifiers Using an Autoencoder-Based Machine Learning Approach
Marcon, Gianluca; Galtarossa, Andrea; Palmieri, Luca; Santagiustina, Marco
University of Padova (Italy)
Abstract: We propose an unsupervised machine learning method based on autoencoders to design the gain profile of few-mode-fiber Raman amplifiers. We test the method for flat and tilted profiles across the C+L optical band, using a few-mode fiber supporting 6 LP mode groups.

 

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Session Tu2A: MM systems and characterization
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Sillard, Pierre
Chair PM-session: Poletti, Francesco

09:30 (AM Session) & 19:30 (PM Session)

Tu2A-1: (Invited) Multi-plane light conversion based mode multiplexers
Carpenter, Joel
The University of Queensland (Australia)
Abstract: In this paper we will discuss some recent advances in multi-plane light conversion. Optical systems that use a cascade of phase planes to implement arbitrary spatial transformations.

10:00 (AM Session) & 20:00 (PM Session)

Tu2A-4: Exploiting Rayleigh Signature Invariancy for Centimeter-Resolved Mode Dispersion Measurement in Few-Mode Fibers
Veronese, Riccardo (1); Alvarado Zacarias, Juan Carlos (2); Fontaine, Nicolas K. (3); Chen, Haoshuo (3); Mazur, Mikael (3); Ryf, Roland (3); Amezcua-Correa, Rodrigo (4); Santagiustina, Marco (1); Galtarossa, Andrea (1); Palmieri, Luca (1)
(1) University of Padova (Italy), (2) CREOL / Nokia Bell Labs (USA), (3) Nokia Bell Labs (USA), (4) CREOL (USA)
Abstract: A new scheme for spatially resolved measurement of mode dispersion in few-mode fibers is presented and experimentally validated on a 4-mode-group fiber. The analysis relies on spectral correlation analysis between fiber's coherent Rayleigh backscattering traces generated by each of the supported mode groups.

10:10 (AM Session) & 20:10 (PM Session)

Tu2A-5: Exploiting Angular Multiplexing for Polarization-diversity in Off-axis Digital Holography
van der Heide, Sjoerd (1); van Anrooij, Rutger (1); van den Hout, Menno (1); Fontaine, Nicolas K. (2); Ryf, Roland (2); Chen, Haoshuo (2); Mazur, Mikael (2); Antonio-Lopez, Jose Enrique (3); Alvarado Zacarias, Juan Carlos (4); Koonen, A,M.J. (1); Amezcua-Correa, Rodrigo (5); Okonkwo, Chigo (1)
(1) Eindhoven University of Technology (The Netherlands), (2) Nokia Bell Labs (USA), (3) CREOL, UCF (USA), (4) CREOL / Nokia Bell Labs (USA), (5) CREOL (USA)
Abstract: Digital holography measures the complex optical field and transfer matrix of a device, polarization-diversity is often achieved through spatial multiplexing. We introduce angular multiplexing, to increase flexibility in the optical setup. Comparatively, similar values for cross-talk and mode-dependent loss are measured for a photonic lantern.

10:20 (AM Session) & 20:20 (PM Session)

Tu2A-6: Modal Amplitude and Phase Estimation of NFP of Six-Mode FMF Based on Artificial Neural Network with the Help of Grey-Wolf-Optimizer
Sugawara, Naoto
Hokkaido University (Japan)
Abstract: A simple and efficient method for estimating modal amplitude and phase of few-mode-fiber based on artificial-neural-network with the help of grey-wolf-optimizer is proposed. Experimentally obtained six-mode near-field-patterns of recently proposed six-mode mixer are analyzed and successfully reproduced for the first time.

10:30 (AM Session) & 20:30 (PM Session)

Tu2A-7: Estimating Modal Group Delay Characteristics of Few-Mode Fibres from Fibre Parameters
Nakamura, Atsushi (1); Ohashi, Masaharu (2); Iida, Daisuke (1); Kubota, Hirokazu (2)
(1) NTT Corporation (Japan), (2) University Public Corporation Osaka (Japan)
Abstract: We propose simple expressions that can estimate the modal group delay characteristics of few-mode fibres from the fibre parameters. Simulations and experiments confirm that our expressions yield characteristics consistent with the theoretical ones.

10:40 (AM Session) & 20:40 (PM Session)

Tu2A-8: High Bandwidth Large Core Multimode Fibre with High Connector Tolerance for Short Distance Communications
Li, Ming-Jun; Li, Kangmei; Chen, Xin; Zakharian, Aramais; Hurley, Jason; Stone, Jeffery
Corning Incorporated (USA)
Abstract: We propose a large core multimode fibre for short distance communications. We demonstrated 24 GHz∙km peak modal bandwidth in the 850 nm window, connector offset tolerance up to 10 µm, and 25G error-free multimode VCSEL transmission over 500 m of such fibre.

 

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Session We1A: Scattering, coupling and sensing
Wednesday 09 December 2020     08:00 - 09:20  (AM Session)    &    18:00 - 19:20  (PM Session)
Chair AM-session: Schmauß, Bernhard
Chair PM-session: Schmauß, Bernhard

08:00 (AM Session) & 18:00 (PM Session)

We1A-1: (Invited) Void-Engineering in Silica Glass for Ultralow Optical Scattering Loss
Ono, Madoka
Hokkaido University/AGC CO. (Japan)
Abstract: Optical loss of silica glass fiber remains a challenge. The main contributor to the optical attenuation is Rayleigh scattering. I review our recent findings on pressure-quenching to reduce optical loss, including experimental and modelling results.

08:30 (AM Session) & 18:30 (PM Session)

We1A-4: (Extended) A Novel Approach to Coupled-Mode Analysis of Geometric Deformations in Reciprocal Waveguides
Guerra, Gianluca (1); Abokhamis Mousavi, Seyed Mohammad (2); Taranta, Austin (2); Numkam Fokoua, Eric (2); Santagiustina, Marco (1); Galtarossa, Andrea (1); Poletti, Francesco (2); Palmieri, Luca (1)
(1) University of Padova (Italy), (2) Optoelectronics Research Centre, University of Southampton (United Kingdom)
Abstract: We present an approach to treat geometric perturbations in coupled-mode analysis for reciprocal waveguides. Geometric perturbations are converted into material ones and a coupled-mode theory for material perturbations is used to assess the propagation. The method is tested on an elliptically deformed antiresonant fiber.

09:00 (AM Session) & 19:00 (PM Session)

We1A-7: Capturing Acoustic Speech Signals with coherent MIMO Phase-OTDR
Dorize, Christian (1); Guerrier, Sterenn (1); Awwad, Elie (2); Renaudier, Jeremie (1)
(1) Nokia Bell Labs (France), (2) Telecom Paris (France)
Abstract: We demonstrate the identification of an acoustic perturbation made of a 6kHz bandwidth speech signature reaching a 1km long SMF. The fiber is probed with a phase-OTDR over two orthogonal polarization axes and the backscattered signal is received by a polarization-diversity coherent mixer (MIMO sensing) which mitigate fading effects

09:10 (AM Session) & 19:10 (PM Session)

We1A-8: A Robust and Low-Cost 2-Dimensional Pressure Sensing System using Polymer Optical Fibre
van den Boom, Henrie; Raz, Oded; Koonen, A.M.J.
Eindhoven University of Technology (The Netherlands)
Abstract: A novel system based on a robust grid of standard low-cost Polymer Optical Fibres has been created which efficiently detects varying 2-dimensional pressure profiles at high speed. Unobtrusive body movement detection in bed is demonstrated with 25 profiles/s using an easy to manufacture 16x8 grid.

 

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Session We2A: Nonlinear Optics
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Brès, Camille
Chair PM-session: Palmieri, Luca

09:30 (AM Session) & 19:30 (PM Session)

We2A-1: (Invited) Gain Through Loss Frequency Comb Generation in Fiber Oscillators
Perego, Auro M. (1); Bessin, Florent (1); Conforti, Matteo (2); Kudlinski, Alexandre (2); Staliunas, Kestutis (3); Turitsyn, Sergei (1); Mussot, Arnaud (2)
(1) Aston University (United Kingdom), (2) Université de Lille (France), (3) Institucio ́ Catalana de Recerca i Estudis Avançats (Spain)
Abstract: We present a novel method to generate optical frequency combs in normal dispersion driven nonlinear resonators, exploiting a filter induced modulation instability which enables waves amplification through losses. We demonstrate frequency comb generation in a fiber resonator with line spacing tuneability exceeding 100 GHz.

10:00 (AM Session) & 20:00 (PM Session)

We2A-4: Multiphoton Absorption Excited Upconversion Luminescence in Multimode Optical Fiber
Ferraro, Mario (1); Mangini, Fabio (2); Zitelli, Mario (1); Niang, Alioune (2); Tonello, Alessandro (3); Couderc, Vincent (3); Wabnitz, Stefan (1)
(1) Sapienza University of Rome (Italy), (2) University of Brescia (Italy), (3) University of Limoges (France)
Abstract: Shedding light on nonlinear loss occurring close to multimode optical fiber damage threshold, we demonstrate that multiple photons are absorbed by material defects and upconverted to shorter wavelength luminescence. An array of blue emitting points results from the spatial self-imaging in graded-index fibers.

10:10 (AM Session) & 20:10 (PM Session)

We2A-5: Stokes Vector Scattering induced by Nonlinear Depolarization of Light in Fiber
Moeller, Lothar
SubCom (USA)
Abstract: We report the experimental observation of SOP scattering in Stokes space caused by nonlinear depolarization (NLDP) of light in fiber. In addition to our previous characterizations of NLDP by SOP speed histograms and Stokes vector spectra, we measure SOP scattering angles. For trans-Pacific propagation distances these angles range within a few deg

10:20 (AM Session) & 20:20 (PM Session)

We2A-6: Stochastic Anti-symmetric Schrodinger Equations for Non-Manakovian Propagation
Moeller, Lothar
SubCom (USA)
Abstract: Unpolarised and co-propagating ASE depolarizes a cw probe via the fibre’s Kerr nonlinearity. We theoretically analyse these previous experimental observations of ultra-fast and PMD-dependent polarization state fluctuations. The probe’s propagation does not obey the Manakov equation and is governed by an advanced Schrodinger formalism for addres.

 

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Session Th1A: Multi Core Fiber
Thursday 10 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Mukasa, Kazunori
Chair PM-session: Gasulla, Ivana

08:00 (AM Session) & 18:00 (PM Session)

Th1A-1: (Extended) Random Polarization-Mode Coupling Explains Inter-Core Crosstalk in Uncoupled Multi-Core Fibers
Antonelli, Cristian (1); Mecozzi, Antonio (1); Hayashi, Tetsuya (2)
(1) University of L'Aquila (Italy), (2) Sumitomo Electric Industries Ltd. (Japan)
Abstract: Existing models for inter-core crosstalk in uncoupled multi-core fibers neglect intra-core random polarization-mode coupling, and conjecture other mechanisms to justify experimental findings. In this work we show that random polarization-mode coupling can explain observed crosstalk values. Good agreement between theory and experiments is obtained.

08:30 (AM Session) & 18:30 (PM Session)

Th1A-4: Transfer Matrix Characterization of Field-Deployed MCFs
Mazur, Mikael (1); Fontaine, Nicolas K. (1); Ryf, Roland (1); Marotta, Andrea (2); Chen, Haoshuo (1); Hayashi, Tetsuya (3); Nagashima, Takuji (3); Nakanish, Tetsuya (3); Morishima, Tetsu (3); Graziosi, Fabio (2); Mecozzi, Antonio (2); Antonelli, Cristian (2)
(1) Nokia Bell Labs (USA), (2) University of L'Aquila (Italy), (3) Sumitomo Electric Industries Ltd. (Japan)
Abstract: We measure the impulse response of cabled coupled- and uncoupled multi-core fibers over 100nm in the C- and L-band. Our results provide insights to the properties of deployed SDM fibers for usage in applications such as transmission and distributed sensing.

08:40 (AM Session) & 18:40 (PM Session)

Th1A-5: Uncoupled 4-core Fibre with Ultra-low Loss and Low Inter Core Crosstalk
Takahashi, Masanori (1); Maeda, Koichi (1); Aiso, Keiichi (1); Mukasa, Kazunori (1); Sugizaki, Ryuichi (1); Soma, Daiki (2); Takahashi, Hidenori (2); Tsuritani, Takehiro (2); Mitrovic, Miranda (3); Pálsdóttir, Bera (3); Arashitani, Yoshihiro (1)
(1) Furukawa Electric Co., Ltd. (Japan), (2) KDDI Research, Inc. (Japan), (3) OFS Fitel Denmark ApS (Denmark)
Abstract: An uncoupled 125-μm-cladding 4-core multicore fibre (MCF) with record low-loss of 0.155dB/km among uncoupled MCFs was realized. Span loss of 60.2km MCF was reduced to less than 10dB including fan-in and fan-out. Inter core crosstalk of the MCF is less than -60dB/100km.

08:50 (AM Session) & 18:50 (PM Session)

Th1A-6: Compact Monitor device for Multicore Fibre with Practically Low loss using Multiple Lenses
Takahata, Taketoshi; Kaya, Asumi; Nagayama, Sayaka; Kobayashi, Tetsuya
Optoquest CO.,Ltd (Japan)
Abstract: We present two monitor devices using multi-core fibre. Both are built with 1 dB or less loss. One of them is a device with Fan-Out function and the other is a photo detector for multi-core application. Key technology is a new structure using multiple lenses.

 

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Session Th2A: Fiber amplifiers
Thursday 10 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Yoo, Seongwoo
Chair PM-session: McClean, Ian

09:30 (AM Session) & 19:30 (PM Session)

Th2A-1: Characterization of an Aluminophosphosilicate Fiber with Annular Erbium Doping for Improved Performance of Cladding-Pumped Amplifiers
Matte-Breton, Charles (1); Essiambre, René-Jean (2); Kelly, Colin (3); Messaddeq, Younès (1); LaRochelle, Sophie (1)
(1) Université Laval, COPL (Canada), (2) Nokia Bell Labs (USA), (3) Nokia Canada (Canada)
Abstract: A single-core fiber with annular erbium doping is investigated to improve the performance of unsaturated cladding-pumped amplifiers. Aluminophosphosilicate reduces the number of ion pairs and a modified refractive index profile slightly enlarges the mode, thus leading to smaller fiber length and improved noise figure.

09:40 (AM Session) & 19:40 (PM Session)

Th2A-2: Output Power Increase of Cladding Pumped 7-core EDFA by Using Mie Scattering
Takasaka, Shigehiro; Maeda, Koichi; Sugizaki, Ryuichi; Arashitani, Yoshihiro
Furukawa Electric CO., Ltd. (Japan)
Abstract: We fabricate a double cladding 7-core erbium doped fibre with expanded core diameter and including Mie scattering bodies in the cladding area. We measure amplification characteristics of a cladding pumped 7-core EDFA and confirm increase of output power to 18.4 dBm by Mie scattering mechanism.

09:50 (AM Session) & 19:50 (PM Session)

Th2A-3: Evaluation of the Signal Amplified by CC-MC-EDFA under Inter-core Crosstalk Using a Scalable SDM/TDM Translation Method
Takeshita, Hitoshi; Matsumoto, Keiichi; Hosokawa, Kohei; Le Taillandier de Gabory, Emmanuel; Arikawa, Manabu
NEC Corporation (Japan)
Abstract: We propose using SDM/TDM translation method to signals amplified by CC-MC-EDFA in a scalable manner to the number of MCF core. We confirmed identical signal quality of the CC-4C-EDFA among 4 cores even if ±0.65dB output optical power fluctuated due to inter-core crosstalk appears.

10:00 (AM Session) & 20:00 (PM Session)

Th2A-4: High Spatial Density 6-Mode 7-Core Fibre Amplifier for C-band Operation
Jain, Saurabh (1); Sakamoto, Taiji (2); Jung, Yongmin (1); Davidson, Ian (1); Barua, Pranabesh (1); Hayes, John (1); Shibahara, Kouki (3); Mizuno, Takayuki (3); Miyamoto, Yutaka (3); Nakajima, Kazuhide (4); Richardson, David (1)
(1) Optoelectronics Research Centre, University of Southampton (United Kingdom), (2) NTT Access Network Service Systems Laboratories (Japan), (3) NTT Network Innovation Laboratories (Japan), (4) NTT Access Network Service Systems Laboratories (United Kingdom)
Abstract: We present a C-band 6-mode 7-core fibre amplifier for space-division-multiplexed transmission supporting a record 42 spatial channels. An average gain of 18-dB and NF of 5.4-dB is obtained with an average differential-modal-gain of 3.4-dB.

10:10 (AM Session) & 20:10 (PM Session)

Th2A-5: Dual-Band Amplification of downstream L-band and upstream C-band signals by FOPA in extended reach PON
Gaur, Chandra (1); Gordienko, Vladimir (2); Bessin, Florent (3); Doran, Nick (2)
(1) Aston Institute of Photonics Technologies (United Kingdom), (2) Aston Institute of Photonic Technologies/Aston University (United Kingdom), (3) Aston University (United Kingdom)
Abstract: We employ a polarisation-insensitive fibre optical parametric amplifier (PI-FOPA) to demonstrate a dual-band bi-directional 50-km reach symmetric 10G-PON link with a splitter power budget of 14dB. The PI-FOPA provides >16dB gain for a bursty upstream and non-burst downstream signals at 1533nm and 1586nnm respectively.

10:20 (AM Session) & 20:20 (PM Session)

Th2A-6: Phase-sensitive amplification of 11 WDM channels across bandwidth of 8 nm in a fibre optic parametric amplifier
Gordienko, Vladimir (1); Ferreira, Filipe (2); Lamb, Jacob (3); Szabó, Áron (1); Doran, Nick (4)
(1) Aston University (United Kingdom), (2) University College of London (United Kingdom), (3) University of Cambridge (United Kingdom), (4) Aston Institute of Photonic Technologies/Aston University (United Kingdom)
Abstract: We experimentally demonstrate phase-sensitive fibre optic parametric amplification with gain >10dB and optical noise figure below 3dB for 11 channels spaced of 100 GHz. We employ all-fibre dispersion management to achieve a wideband phase-matching between signals and their copies.

10:30 (AM Session) & 20:30 (PM Session)

Th2A-7: Record Gain, Low Noise Figure, C+L Band Lumped Raman Amplifier
Liang, Sijing (1); Jain, Saurabh (1); Xu, Lin (1); Bottrill, Kyle (1); Taengnoi, Natsupa (1); Guasoni, Massimiliano (1); Zhang, Peng (2); Xiao, Mengben (2); Kang, Qiongyue (2); Jung, Yongmin (1); Petropoulos, Periklis (1); Richardson, David (1)
(1) Optoelectronics Research Centre, University of Southampton (United Kingdom), (2) HiSilicon Optoelectronics Co., Ltd. (China)
Abstract: We demonstrate a compact and high performance dual-stage lumped Raman amplifier using 2x1 km lengths of highly nonlinear fibre. The amplifier provides a record 27-dB gain (2.6-dB flatness) and low 5.8-dB average NF (

10:40 (AM Session) & 20:40 (PM Session)

Th2A-8: 2051 nm Narrow Linewidth All-Fibre DFB Laser for Holmium-Doped Fibre-Amplifier Applications
Walasik, Wiktor (1); Traoré, Daniya (1); Amavigan, Alexandre (1); Tench, Robert (1); Delavaux, Jean-Marc (1); Pinsard, Emmanuel (2)
(1) CYBEL LLC (USA), (2) iXblue Photonics (France)
Abstract: We report the design and performance of a single frequency all-fibre 2051 nm DFB laser source employing FBGs. Output powers of 36 mW CW and OSNR of > 65 dB/0.05 nm are obtained. Heterodyne measurements yield laser linewidths of ~130 kHz FWHM. The single frequency source is amplified with a polarization-maintaining HDFA to an output power of 1 W CW.

 

SC02 - Optoelectronic Devices and Technologies

 

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Session Mo1B: Optical sources
Monday 07 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Guo, X.
Chair PM-session: Guina, M.

08:30 (AM Session) & 18:30 (PM Session)

Mo1B-4: Single-mode and High-speed Intracavity Metal Aperture VCSEL with Transverse Coupled Cavity Effect
Ibrahim, Hameeda (1); Hassan, Ahmed M.A (1); Ahmed, Mostafa (2); Koyama, Fumio (1)
(1) Tokyo Institue of Technology (Japan), (1) Tokyo Institute of Technology (Japan), (2) Minia unversity (Egypt)
Abstract: We present a novel design of intracavity metal-aperture VCSELs toward high-speed and single-mode operations. The intracavity metal contact causes the transverse resonance which provides the modulation bandwidth enhancement. The small-signal modulation bandwidth can be double with a large mode-field diameter of 10um and single-mode operations.

08:40 (AM Session) & 18:40 (PM Session)

Mo1B-5: Monolithic 2µm GaSb-based passively mode-locked laser
Zia, Nouman; Viheriala, Jukka; Uusitalo, Topi; Koivusalo, Eero; Guina, Mircea
Tampere University (Finland)
Abstract: A double-section passive mode-locked GaSb-based laser emitting more than 10mW average power is presented. The device emits optical pulses at 18.76 GHz repetition rate and estimated pulse width of 1.3 ps. An optical spectrum as wide as 3.2 nm is recorded which spans over more than 10 longitudinal modes.

08:50 (AM Session) & 18:50 (PM Session)

Mo1B-6: Monolithic Integration of a Phase Noise Based Quantum Random Number Generator on InP platform
Diaz-Otero, Francisco J. (1); Alvarez-Outerelo, David (1); Troncoso-Costas, Marcos (1); Roumpos, Ioannis (2); Chrysostomidis, Themistoklis (2); Moskalenko, Valentina (3); Vyrsokinos, Konstantinos (2)
(1) atlanTTic Research Center, University of Vigo (Spain), (2) School of Physics, Aristotle University of Thessaloniki (Greece), (3) Bright Photonics (The Netherlands)
Abstract: We present the experimental characterization of a fully integrated InP-based quantum random number generator chip composed from a single gain switched DBR laser and two Mach Zehnder interferometers. We demonstrate high degree of randomness by testing the QRNG output in the NIST Statistical Test Suite

 

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Session Mo2B: High speed transmitters
Monday 07 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Takenaka, M.
Chair PM-session: Akulova, Y.

09:30 (AM Session) & 19:30 (PM Session)

Mo2B-1: (Invited) High-performance hybrid silicon and lithium niobate Mach–Zehnder modulators
Cai, Xinlun
Sun Yat-Sen University (China)
Abstract: Hybrid Lithium Niobate (LN) and Silicon photonic (SiPh) integration platform has emerged as a promising candidate for future optical modulators. In this paper, we discuss the technologies for realizing hybrid LN/SiPh platform. Various functional devices derived from the Mach-Zehnder interferometer configuration are also reviewed.

10:00 (AM Session) & 20:00 (PM Session)

Mo2B-4: Net 113-Gbps PAM-4 Transmission Using Membrane DML-on-Si with 0.34 pJ/bit at 50 oC
Diamantopoulos, Nikolaos Panteleimon (1); Yamaoka, Suguru (1); Fujii, Takuro (2); Nishi, Hidetaka (1); Takeda, Koji (1); Tsuchizawa, Tai (2); Kakitsuka, Takaaki (3); Matsuo, Shinji (2)
(1) NTT (Japan), (2) NTT Device Technology Labs (Japan), (3) Waseda University (Japan)
Abstract: A membrane-III-V-on-Si laser with a ~47.5-GHz bandwidth is demonstrated by achieving stable photon-photon resonance. Direct modulation of 60-GBaud PAM-4 under KP4-FEC (net 113.42 Gbps) over 2-km SSMF with 0.17 pJ/bit at 25 oC and 0.34 pJ/bit at 50 oC have been achieved.

10:10 (AM Session) & 20:10 (PM Session)

Mo2B-5: Heterogeneously Integrated Membrane DFB Laser and Si Mach-Zehnder Modulator on Si Photonics Platform
Aihara, Takuma (1); Hiraki, Tatsurou (1); Fujii, Takuro (1); Takeda, Koji (2); Tsuchizawa, Tai (1); Kakitsuka, Takaaki (3); Fukuda, Hiroshi (1); Matsuo, Shinji (1)
(1) NTT Device Technology Labs (Japan), (2) NTT (Japan), (3) Waseda University (Japan)
Abstract: We demonstrate a heterogeneous integration of a membrane buried-heterostructure DFB laser and a Si Mach-Zehnder modulator on a Si photonics platform with a 220-nm-thick silicon-on-insulator layer. Clear eye openings at 32 Gbit/s are demonstrated up to 80°C using the device.

10:20 (AM Session) & 20:20 (PM Session)

Mo2B-6: Wide-temperature-range 100-Gbaud Operation of a Lumped-electrode-type EA-DFB for an 800-Gb/s Optical Transceiver
Adachi, Koichiro; Tanaka, Shigehisa; Asakura, Hideaki; Nakamura, Atsushi; Naoe, Kazuhiko; Tanaka, Shigehisa
Lumentum (Japan)
Abstract: A lumped-electrode-type EA-DFB with a short-length modulator packaged by using an ultra-short wiring technique achieved bandwidth over 60-GHz in a wide-temperature range, and 100-Gbaud NRZ eye opening up to 80⁰C was demonstrated for the first time.

 

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Session Tu1B: Modulators
Tuesday 08 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Choi, W-Y.
Chair PM-session: Grange, R.

08:00 (AM Session) & 18:00 (PM Session)

Tu1B-1: (Invited) High-speed silicon photonic modulator based on forward-biased PIN diodes and passive equalizers
Tanaka, Shinsuke; Sobu, Yohei
Fujitsu limited (Japan) & Optoelectronics Industry and Technology Development Association (OITDA) (Japan)
Abstract: This talk reviews our bandwidth enhancement technique for an all-silicon modulator using passive RC equalizers. We present 90 Gbaud NRZ and 70 Gbaud PAM4 operations of a segmented MZ modulator. The simulated performances of the optical DAC based transmitter including its driving circuit are also discussed.

08:30 (AM Session) & 18:30 (PM Session)

Tu1B-4: (Highly scored) 50-GHz-bandwidth Electro-absorption Modulator with Membrane InGaAsP Lateral p-i-n Diode on Si Platform
Hiraki, Tatsurou (1); Aihara, Takuma (1); Maeda, Yoshiho (1); Fujii, Takuro (1); Tsuchizawa, Tai (1); Takahata, Kiyoto (2); Kakitsuka, Takaaki (2); Matsuo, Shinji (1)
(1) NTT Device Technology Labs (Japan), (2) Waseda University (Japan)
Abstract: A 300-micrometers-long membrane InGaAsP electro-absorption modulator (EAM) integrated on Si-waveguide circuits exhibits a 3-dB bandwidth of 50 GHz. The EAM shows high linearity, low loss (< 4 dB), and eye openings for 112-Gbit/s PAM4 signals at wavelengths from 1570 to 1600 nm.

08:40 (AM Session) & 18:40 (PM Session)

Tu1B-5: Si Microring Resonator Switch Based on III-V/Si Hybrid MOS Optical Phase Shifter Using Ultrathin InP Membrane
Ohno, Shuhei (1); Li, Qiang (1); Sekine, Naoki (1); Tang, Hanzhi (1); Monfray, Stéphane (2); Boeuf, Frédéric (2); Toprasertpong, Kasidit (1); Takagi, Shinichi (1); Takenaka, Mitsuru (1)
(1) The University of Tokyo (Japan), (2) ST Microelectronics (France)
Abstract: We demonstrate ultralow-power Si microring resonator switch based on taperless III-V/Si hybrid MOS optical phase shifter using ultrathin InP membrane. Owing to electron accumulation at the InP MOS interface, we successfully achieved optical switching with 0.3 pW, enabling large-scale integration without thermal crosstalk.

08:50 (AM Session) & 18:50 (PM Session)

Tu1B-6: 100 Gbit/s NRZ Data Modulation in Plasmonic Racetrack Modulators on the Silicon Photonic Platform
Messner, Andreas (1); Baeuerle, Benedikt (2); Heni, Wolfgang (2); De Leo, Eva (2); Winiger, Joel (1); Habegger, Patrick (2); Eppenberger, Marco (1); Koch, Ueli (1); Elder, Delwin (3); Dalton, Larry (3); Leuthold, Juerg (4)
(1) IEF, ETH Zurich (Switzerland), (2) Polariton Technologies AG (Switzerland), (3) Department of Chemistry, U Washington (USA), (4) ETH Zurich (Switzerland)
Abstract: Low power broadband plasmonic silicon-photonic racetrack modulators are introduced. 100Gbit/s NRZ-OOK and 100 Gbit/s 4-PAM direct detection is demonstrated. The devices feature a bandwidth of 50 GHz, operate with 1.3 Vp and are of interest because of the low on-chip loss characteristics.

09:00 (AM Session) & 19:00 (PM Session)

Tu1B-7: Heterogeneous SISCAP Microring Modulator for High-Speed Optical Communication
Srinivasan, Sudharsanan; Liang, Di; Beausoleil, Raymond G
Hewlett Packard Enterprise (USA)
Abstract: We present a semiconductor-insulator-semiconductor capacitor (SISCAP) microring modulator in the O-band suitable for integration with lasers and photodetectors on the heterogeneous silicon platform. We show data modulation up to 28 Gb/s without any pre or post cursor intersymbol interference (ISI) cancellation.

 

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Session Tu2B: Passive devices
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Matsuo, S.
Chair PM-session: Halir, Robert

09:30 (AM Session) & 19:30 (PM Session)

Tu2B-1: On-Chip 4f-System-Based Arbitrary-Mode Spot Size Conversion
Qi, Wei; Chen, Chao; Yu, Yu; Zhang, Xinliang
Huazhong University of Science and Technology (China)
Abstract: An on-chip spot size converter is proposed and demonstrated for arbitrary modes, using a pair of lenses in a 4-f imaging system configuration. The device length can be reduced by 72% compared to linear taper at a same inter-mode crosstalk level.

09:40 (AM Session) & 19:40 (PM Session)

Tu2B-2: Silicon Photonic MEMS Add-Drop Filter
Sattari, Hamed (1); Takabayashi, Alain Yuji (1); Edinger, Pierre (2); Verheyen, Peter (3); Gylfason, Kristinn B. (2); Bogaerts, Wim (4); Quack, Niels (1)
(1) EPFL (Switzerland), (2) KTH (Sweden), (3) imec (Belgium), (4) Ghent University - imec (Belgium)
Abstract: We demonstrate a compact add-drop filter based on a MEMS ring resonator implemented in IMEC’s iSiPP50G silicon photonics platform. The device exhibits a port extinction of 20 dB and a port isolation of > 50 dB, upon actuation range of 0 V to 27 V.

09:50 (AM Session) & 19:50 (PM Session)

Tu2B-3: Scalable Metasurface Building Blocks for Arbitrary On-chip High-order Mode Manipulation
Xiang, Jinlong; Tao, Zhiyuan; Zhao, Yaotian; Guo, Xuhan; Su, Yikai
Shanghai Jiao Tong University (China)
Abstract: We propose a novel metasurface building block concept to implement arbitrary on-chip high-order mode manipulation with uniform performance. The fabricated TE0-TE2 mode operator shows low insertion loss (< 1.5 dB), low modal crosstalk (< ¬–15 dB) and broad bandwidth (1520-1580 nm), and can be parallelized to extend for high-order modes

10:00 (AM Session) & 20:00 (PM Session)

Tu2B-4: Ultra-Compact Silicon Mode (De)Multiplexer Based on Single Dielectric Slot
Zhao, Yaotian; Xiang, Jinlong; He, Yu; Guo, Xuhan; Su, Yikai
Shanghai Jiao Tong University (China)
Abstract: A two-mode (de)multiplexer is demonstrated by mode coupling control based on a single dielectric slot. The input light could be coupled into a TE0 or TE1 mode with low insertion losses (

10:10 (AM Session) & 20:10 (PM Session)

Tu2B-5: Mid-infrared Non-volatile Compact Optical Phase Shifter Based on Ge2Sb2Te5
Miyatake, Yuto (1); Ho, Chong Pei (1); Pitchappa, Prakash (2); Singh, Ranjan (2); Makino, Kotaro (3); Tominaga, Junji (3); Miyata, Noriyuki (3); Nakano, Takashi (3); Sekine, Naoki (1); Toprasertpong, Kasidit (1); Takagi, Shinichi (1); Takenaka, Mitsuru (1)
(1) The University of Tokyo (Japan), (2) Nanyang Technological University (Singapore), (3) National Institute of Advanced Industrial Science and Technology (Japan)
Abstract: We demonstrated a low-loss, non-volatile optical phase shifter based on phase-change material, Ge2Sb2Te5 operating at a 2 um wavelength. Using a 10-um-long phase-change phase shifter, we obtained a 0.7pi phase shift at 2 um with approximately 10 times smaller loss per phase shift than at 1.55 um.

10:20 (AM Session) & 20:20 (PM Session)

Tu2B-6: Passive Amplification of Data Signals using On-chip Dispersive Phase Filters in Silicon
Kaushal, Saket (1); Klitis, Charalambos (2); Sorel, Marc (2); Azana, Jose (1)
(1) Institut National de la Recherche Scientifique (Canada), (2) School of Engineering, University of Glasgow (United Kingdom)
Abstract: We propose a dispersive phase filter design for passive amplification of data signals using waveguide Bragg gratings in silicon. In experiments, passive amplification by a factor ~ 3 of a PAM-4 data signal is demonstrated using this design.

 

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Session We1B: Lasers
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Lamponi, M.
Chair PM-session: Debrégeas, H.

08:00 (AM Session) & 18:00 (PM Session)

We1B-1: (Invited) Ultralow Power Dissipation Optical Interconnects: Directly Modulated Membrane Lasers and Photonics Crystal Lasers
Takeda, Koji; Matsuo, Shinji
NTT Device Technology Laboratories, NTT Corporation (Japan) & NTT Nanophotonics Center, NTT Corporation (Japan)
Abstract: Low-power dissipation lasers on Si are needed for short-distance optical interconnects. We review our recent progress on semiconductor lasers ranging from 100-􀁐m long to wavelength-scale cavities. Strong optical confinement and gratings with a large coupling coefficient are the key to attaining ultralow power consumption lasers.

08:30 (AM Session) & 18:30 (PM Session)

We1B-4: Ultra-Fast Tunable Laser Enabling 4 ns Coherent Slot Switching Beyond 100 Gbit/s
Verolet, Theo (1); Almonacil, Sylvain (2); Szczerban, Mijail (2); Estarán, José Manuel (2); Boddeda, Rajiv (2); Boitier, Fabien (2); Provost, Jean-Guy (1); Mardoyan, Haik (2); Blache, Fabrice (3); Decobert, Jean (4); Olivier, Ségolène (5); Shen, Alexandre (1); Bigo, Sébastian (2)
(1) III-V Lab (France), (2) Nokia Bell Labs (France), (3) III-V Lab, a joint laboratory between Nokia, Thalès, and CEA Leti (France), (4) III-V lab, Nokia Bell Labs (France), (5) CEA Leti (France)
Abstract: We demonstrate ultra-fast wavelength switching of a narrow linewidth tunable laser. It enables coherent slot switching with a waiting time comprising laser switching, stabilization, channel estimation and data recovery under 4 ns (resp. 30 ns) for 32 Gbaud dual polarization QPSK (resp. 16QAM).

08:40 (AM Session) & 18:40 (PM Session)

We1B-5: Laser Array covering 155 nm Wide Spectral Band achieved by Selective Area Growth on Silicon Wafer
Besancon, Claire (1); Fanneau, Pierre (1); Néel, Delphine (1); Cerulo, Giancarlo (1); Vaissiere, Nicolas (1); Make, Dalila (1); Pommereau, Frédéric (1); Fournel, Frank (2); Dupré, Cécilia (2); Baron, Thierry (3); Decobert, Jean (1)
(1) III-V lab, Nokia Bell Labs (France), (2) Univ. Grenoble Alpes, CEA LETI (France), (3) Univ. Grenoble Alpes, CNRS, CEA LETI Minatec, LTM (France)
Abstract: Vertical p-i-n AlGaInAs lasers obtained from a single Selective Area Growth (SAG) step on a thin InP layer bonded to silicon wafers are presented. A PL extension from 1490 nm to 1645 nm was demonstrated on InP-SOI wafer. Based on this result, a record of 155 nm wide spectral range was obtained for FP lasers on InP-SiO2/Si wafer.

08:50 (AM Session) & 18:50 (PM Session)

We1B-6: Burst-Tolerant λ-Switching of Electro-Optically Tunable Reflection-type Transversal Filter Laser with Single Active Region
Saito, Yusuke (1); Ueda, Yuta (1); Shindo, Takahiko (1); Kanazawa, Shigeru (1); Matsuzaki, Hideaki (2); Ishikawa, Mitsuteru (1)
(1) NTT Device Innovation Center, NTT Corporation (Japan), (2) NTT Device Technology Labs., NTT Corporation (Japan)
Abstract: We developed a narrow-linewidth electro-optically tunable laser that has a single active region that covers 35-nm bandwidth without slow-speed cavity gain switching. We achieved burst-tolerant high-speed 8-ch wavelength switching that covers > 30-nm bandwidth. Practical optical switching for 100-Gbps coherent signals was successfully demonstrated.

 

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Session We2B: Detectors
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Umbach, A.
Chair PM-session: Beling, A.

09:30 (AM Session) & 19:30 (PM Session)

We2B-1: (Extended) 0.3pA Dark Current and 0.65A/W Responsivity 1020nm InGaAs/GaAs Nano-Ridge Waveguide Photodetector Monolithically Integrated on a 300-mm Si Wafer
Ozdemir, Cenk Ibrahim (1); De Koninck, Yannick (2); Yudistira, Didit (2); Kuznetsova, Nadezda (2); Baryshnikova, Marina (2); Van Thourhout, Dries (1); Kunert, Bernardette (2); Pantouvaki, Marianna (2); Van Campenhout, Joris (2)
(1) imec / University of Ghent (Belgium), (2) imec (Belgium)
Abstract: We report p-i-n InGaAs/GaAs multi-quantum well nano-ridge waveguide photodetectors monolithically integrated on a 300-mm Si wafer. The devices exhibit low dark currents of 0.3 pA (1.36x10-7A/cm2) at -1V bias and internal responsivities of 0.65A/W at 1020nm wavelength.

10:00 (AM Session) & 20:00 (PM Session)

We2B-4: Inverted p-down pin photodiode exceeding 70-GHz bandwidth featuring low operating bias voltage of 2 V
Nada, Masahiro; Nakajima, Fumito; Tatsumi, Shoko; Yamada, Yuki; Nakanishi, Yasuhiko; Yoshimatsu, Toshihide; Sano, Kimikazu; Matsuzaki, Hideaki
NTT (Japan)
Abstract: We present a vertical-illumination pin photodiode (PD) with an inverted p-down structure, which is advantageous in fabrication, optical coupling, and dark-current suppression. The PD is designed to maximize bandwidth at low bias, resulting in 70.1-GHz bandwidth at 2 V with 0.61-A/W responsivity.

10:10 (AM Session) & 20:10 (PM Session)

We2B-5: Multi Format High Speed linear Preamplified Receiver Operating at 100 Gbit/s NRZ-OOK
Caillaud, Christophe (1); Borkowski, Robert (2); Blache, Fabrice (3); Jorge, Filipe (3); Goix, Michel (3); Duval, Bernadette (3); Bonk, Rene (2); Mallecot, Franck (3)
(1) III-V Lab (France), (2) Nokia Bell Labs (Germany), (3) III-V Lab, a joint laboratory between Nokia, Thalès, and CEA Leti (France)
Abstract: We demonstrate a monolithically integrated preamplified receiver with >70 A/W responsivity, 60 GHz bandwidth which demonstrate detection of very low power 100 Gbit/s NRZ-OOK signal and compatible with PAM4 detection

 

SC03 - Integrated and co-integrated circuits

 

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Session Mo1C: Hybrid integration
Monday 07 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Roelkens, Gunther
Chair PM-session: Van Thourhout, Dries

08:00 (AM Session) & 18:00 (PM Session)

Mo1C-1: (Invited) 50Gb/s Hybrid Integrated Si-Photonic Optical Link in 16nm FinFET
Raj, Mayank (1); Frans, Yohan (1); Chiang, Ping-Chuan (1); Ambatipudi, Sai Lalith Chaitanya (1); Mahashin, David (1); De Heyn, Peter (2); Balakrishnan, Sadhishkumar (2); Van Campenhout, Joris (2); Grayson, Jimmy (3); Epitaux, Marc (3); Chang, Ken (1)
(1) Xilinx (USA), (2) imec (Belgium), (3) Samtec (San Jose)
Abstract: We present an EAM based single-mode optical link. The TX uses over-peaking to improve modulation efficiency and relax TIA’s noise requirement. The RX uses a 3-stage TIA with T-coils to improve bandwidth. The link achieves BER

08:30 (AM Session) & 18:30 (PM Session)

Mo1C-4: Modularly and Hybrid Integrated SiPh/InP Wavelength Blocker Switch for Metro Networks
Tessema, Netsanet (1); Delrosso, Giovanni (2); Srivathsa, Bhat (2); Prifti, Kristif (1); Rasoulzadehzali, Aref (1); Stabile, Ripalta (Patty) (1); Calabretta, Nicola (1)
(1) Eindhoven University of Technology (The Netherlands), (2) VTT Technical Research Centre of Finland Ltd. (Finland)
Abstract: We report the proof-of-concept functional demonstration of the first hybrid integrated wavelength blocker switch for metro network realized via hybrid integration of passive SiPh deMux/Mux AWGs and active InP SOA gates. Error free 10 Gbps/channel NRZ transmission per wavelength channel is demonstrated with

08:40 (AM Session) & 18:40 (PM Session)

Mo1C-5: Micro-Transfer Printing of Lithium Niobate on Silicon Nitride
Vanackere, Tom; Billet, Maximilien; Op de Beeck, Camiel; Poelman, Stijn; Roelkens, Gunther; Clemmen, Stéphane; Kuyken, Bart
Ghent University (Belgium)
Abstract: Successful micro-transfer printing of lithium niobate on a silicon nitride platform is demonstrated. A proof of concept electro-optical modulator is fabricated using this hybrid integration method which shows a half-wave voltage-length product VpiLpi = 5,5 Vcm and insertion losses of 7 dB.

 

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Session Mo2C: High density electro-optical packaging
Monday 07 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Takahiro, Nakamura
Chair PM-session: Hasharoni, Kobi

09:30 (AM Session) & 19:30 (PM Session)

Mo2C-1: (Invited) Co-packaged optics for data center switching
Stone, Rob; Chen, Ruby; Rahn, Jeff; Venkataraman, Srinivas; Wang, Xu; Schmidtke, Katharine; Stewart, James
Facebook (USA)
Abstract: As the bandwidth of data center switches increases, a disproportionate amount of power is becoming dedicated to the switch – optics interface. Reducing the physical separation between these two components by co-packaging enables system power savings which is essential to continued bandwidth scaling.

10:00 (AM Session) & 20:00 (PM Session)

Mo2C-4: A Cost Effective Hermetically Sealed 106 Gbit/s PAM4 EML TO-CAN For Beyond-5G Mobile Fronthaul
Fujihara, Ryota; Shirao, Mizuki; Nakamura, Seiki; Nakano, Seiji; Hasegawa, Kiyotomo
Mitsubishi Electric Corporation (Japan)
Abstract: We demonstrated 106 Gbit/s PAM4 signal transmission using a low cost hermetically sealed EML TO-CAN employing a metal plate to suppress resonance by providing a common ground between the TO-header and the FPC. A 3dB bandwidth of 35.9 GHz and TDECQ of 2.51dB were achieved.

 

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Session Tu1C: Photonic circuits outlook
Tuesday 08 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Van Campenhout, Joris
Chair PM-session: Nielsen, Mads Lønstrup

08:00 (AM Session) & 18:00 (PM Session)

Tu1C-1: (Invited) Disruption Cycles for Optical Networks: How Point to Multi-Point Coherent Optics can Transform the Cost and Complexity of the Optical Network
Welch, David F.
Infinera (USA)
Abstract: XR Optics is a family of point to multi-point transceivers that can interoperated across a variety of different speed transceivers. By employing individually routable digitally generated subcarriers we demonstrate for the first time the dramatic cost savings and simplification of the fiber optic network.

08:30 (AM Session) & 18:30 (PM Session)

Tu1C-4: Demonstration of Classification Task Using Optical Neural Network Based on Si Microring Resonator Crossbar Array
Ohno, Shuhei (1); Toprasertpong, Kasidit (2); Takagi, Shinichi (1); Takenaka, Mitsuru (2)
(1) Department of Electrical Engineering and Information Systems, The University of Tokyo (Japan), (2) The University of Tokyo (Japan)
Abstract: We demonstrate Si microring resonator crossbar array as a programmable nanophotonic processor. By using multi-wavelength optical signal and monolithically integrated Ge photodetectors, we performed multiply-accumulate operation for optical neural network. We demonstrated classification task for Iris dataset, resulting in prediction accuracy of 91%.

08:40 (AM Session) & 18:40 (PM Session)

Tu1C-5: Time-series classification with an all-optical recurrent neuron
Mourgias-Alexandris, George; Passalis, Nikolaos; Dabos, George; Totovic, Angelina; Tefas, Anastasios; Pleros, Nikos
Aristotle University of Thessaloniki (Greece)
Abstract: We present an all-optical recurrent neuron comprising a novel space rotator and a sigmoid activation unit and demonstrate experimentally time-series classification. Real-time recognition of both RZ and NRZ 3-bit-long bit sequences with 100psec optical pulses is successfully demonstrated, revealing an average accuracy of >91%.

 

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Session Tu2C: High functionality silicon photonics
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: O'Brien, Peter
Chair PM-session: Zimmermann, Lars

09:30 (AM Session) & 19:30 (PM Session)

Tu2C-1: (Invited) High Density Silicon Photonic Integrated Circuits and Photonic Engine for Optical Co-packaged Ethernet Switch
Liao, Ling; Fathololoumi, Saeed; Hui, David
Intel Corp. (USA)
Abstract: We present performance of 1.6 Tbps silicon photonic integrated circuits (SiPICs) and their key device components. These high bandwidth density SiPICs enabled fully functional photonic engines (PEs) that can be co-packaged with Ethernet switches and demonstrated IEEE standards compliant interop-link with 400 Gbps DR4 modules.

10:00 (AM Session) & 20:00 (PM Session)

Tu2C-4: 56 GBaud O-Band Transmission using a Photonic BiCMOS Coherent Receiver
Seiler, Pascal (1); Peczek, Anna (2); Winzer, Georg (3); Voigt, Karsten (1); Lischke, Stefan (3); Fatemi, Adel (3); Zimmermann, Lars (1)
(1) Technische Universität Berlin (Germany), (2) IHP Solutions GmbH (Germany), (3) IHP GmbH (Germany)
Abstract: We present a photonic BiCMOS coherent receiver dedicated to the O-band and achieve detection at up to 56 GBd using quadrature-phase shift-keying (QPSK) at various optical signal-to-noise ratios (OSNRs). Transmission experiments are performed and potential applications within that power budget are discussed.

10:10 (AM Session) & 20:10 (PM Session)

Tu2C-5: Demonstration of Optical Re-Distribution on Silicon Photonics Die Using Polymer Waveguide and Micro Mirrors
Noriki, Akihiro (1); Tamai, Isao (2); Ibusuki, Yasuhiro (2); Ukita, Akio (2); Suda, Satoshi (1); Takemura, Koichi (2); Shimura, Daisuke (2); Onawa, Yosuke (2); Yaegashi, Hiroki (2); Amano, Takeru (1)
(1) National Institute of Advanced Industrial Science and Technology (AIST) (Japan), (2) Photonics Electronics Technology Research Association (PETRA) (Japan)
Abstract: An optical re-distribution based on micro-mirrors and polymer waveguide was demonstrated on a silicon photonics die for advanced co-packaged optics. Low wavelength dependent characteristics was obtained and 28GBaud NRZ signal was also successfully transmitted with negligible signal distortions.

10:20 (AM Session) & 20:20 (PM Session)

Tu2C-6: (Extended) Self-Aligned Polymeric Fiber Interface with 20/mm Port Density and 1.1 dB O-Band Loss
Janta-Polczynski, Alexander (1); Barwicz, Tymon (2); Langlois, Richard (1); Li, Chao (3); Wang, Ying (3); Lo, Guo-Qiang (3); Takenobu, Shotaro (4); Kobayashi, Kenta (4); Watanabe, Kengo (5); Deptuck, Dan (6); Boyer, Nicolas (1); Fortier, Paul (1)
(1) IBM (Canada), (2) IBM (USA), (3) Advanced Micro Foundry (AMF) (Singapore), (4) AGC inc (Japan), (5) furukawaelectric (Japan), (6) CMC Microsystem (Canada)
Abstract: We show a self-aligned compliant polymer interface between standard fiber connectors and nanophotonic waveguides with a polarization independent 1.1dB loss and a broadband response. The required chip interface is available through a commercial photonic foundry.

 

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Session We1C: Transmitters and receivers
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Nielsen, Mads Lønstrup
Chair PM-session: Schow, Clint

08:00 (AM Session) & 18:00 (PM Session)

We1C-1: A 25G Burst-mode Receiver with −27.7-dBm Sensitivity and 150-ns Response-Time for 50G-EPON Systems
Katsurai, Hiroaki; Nakanishi, Yasuhiko; Kanda, Atsushi; Yoshimatsu, Toshihide; Kanazawa, Shigeru; Nada, Masahiro; Nakamura, Hirotaka; Sano, Kimikazu
NTT Corporation (Japan)
Abstract: A 25Gbit/s-class burst-mode receiver for 50G-EPON systems with a 25G APD and 25G burst-mode TIA, fabricated by 0.13-µm SiGe BiCMOS technology, achieves record high sensitivity of −27.7 dBm (OMA) at BER = 10−2 and record settling time of 150 ns.

08:10 (AM Session) & 18:10 (PM Session)

We1C-2: Direct Differential Drive of a Conventional 53-Gbaud EA-DFB using Commercially Available DSP
Adachi, Koichiro; Tanaka, Shigehisa
Lumentum (Japan)
Abstract: DSP-direct differential drive of an EA-DFB without an external/integrated driver amplifier was demonstrated for the first time. A 53.125-Gbaud PAM4 eye waveform was confirmed with outer ER of 3.5 dB and TDECQ of 2.7 dB by differential drive with 630 mVppd directly supplied from the DSP.

08:20 (AM Session) & 18:20 (PM Session)

We1C-3: Ultra-wideband Optical Receiver Using Electrical Spectrum Decomposition Technique
Hamaoka, Fukutaro (1); Nakamura, Masanori (1); Nagatani, Munehiko (2); Wakita, Hitoshi (2); Kobayashi, Takayuki (1); Yamazaki, Hiroshi (2); Nosaka, Hideyuki (2); Miyamoto, Yutaka (1)
(1) NTT Network Innovation Laboratories (Japan), (2) NTT Device Technology Laboratories (Japan)
Abstract: We propose an electrical spectrum decomposition technique using an ultra-broadband electrical bandwidth divider consisting of newly developed AMUX-based frequency shifters and an adder-subtractor based on in-house InP-HBT technology. Ultra-wideband optical 2×56-GBaud QPSK signal was successfully received and decomposed into narrowband signals.

08:30 (AM Session) & 18:30 (PM Session)

We1C-4: Dual-wavelength laser with phase-controlled optical feedback loop for rapid switching
De Mey, Robbe (1); Pawlus, Robert (1); Breuer, Stefan (2); Virte, Martin (1)
(1) Vrije Universiteit Brussel (VUB) (Belgium), (2) Technische Universitat Darmstadt (Germany)
Abstract: We propose a novel technique to pilot the power balance in a dual-wavelength laser design. This technique, based on phase-controlled optical feedback, allows for very fast switching with only one control parameter.

 

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Session We2C: Complex integrated optic circuits
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Bottoni, Fabio
Chair PM-session: Augustin, Luc

09:30 (AM Session) & 19:30 (PM Session)

We2C-1: (Extended) 2x800Gbps/wave Coherent Optical Module Using a Monolithic InP Transceiver PIC
Chitgarha, Mohammad Reza; Studenkov, Pavel; Zhang, Jiaming; Hodaei, Hossein; Frost, Thomas; Tsai, Huan-Shang; Buggaveeti, Sanketh; Rashidinejad, Amir; Yekani, Amin; Mirzaei Nejad, Reza; Kerns, Samantha; Diniz, Júlio; Pavinski, Don; Brigham, Robert; Foo, Ben; Al-Khateeb, Mohammad; Koenig, Swen; Wolf, Stefan; Going, Ryan; Porto, Stefano; Leung, Irene; Maher, Robert; Dominic, Vince; Sun, Han; Sanders, Steve; Osenbach, John; Corzine, Scott; Evans, Peter; Lal, Vikrant; Ziari, Mehrdad Ziari
Infinera Corp. (USA)
Abstract: We report on the development of a 2x800Gbps/wave coherent module based on a monolithic InP transceiver PIC and real-time 7nm DSP ASIC capable of 800Gbps data transmission over record 1000km SMF-28 link using a 96Gbaud, PCS-64QAM modulation format.

10:00 (AM Session) & 20:00 (PM Session)

We2C-4: A Compact Monitoring Circuit to Accurately Extract Fabrication Deviation in Silicon Waveguides
Horikawa, Tsuyoshi; Okayama, Hideaki; Onawa, Yosuke; Shimura, Daisuke; Ushida, Jun; Shiina, Akemi; Murao, Tadashi; Yaegashi, Hiroki
Photonics Electronics Technology Research Association (PETRA) (Japan)
Abstract: Novel optical circuit with a microring resonator and polarization rotators was proposed for process control monitoring. The extraction method by TE and TM spectral analysis using the circuit showed sensitivity to sub-nm order fabrication deviations as well as robustness to measurement errors.

10:10 (AM Session) & 20:10 (PM Session)

We2C-5: An Accurate and Computationally Efficient Large-signal SPICE Model for Depletion-type Silicon Ring Modulators Including Temperature Dependence
Kim, Minkyu (1); Lischke, Stefan (2); Mai, Christian (3); Zimmermann, Lars (4); Choi, Woo-Young (1)
(1) Yonsei University (South Korea), (2) IHP GmbH (Germany), (3) IHP (Germany), (4) Technische Universität Berlin (Germany)
Abstract: We present large-signal SPICE model for ring modulators including temperature dependence. The model is verified with 25-Gb/s NRZ modulation at several different temperatures. With this model, the temperature-dependent eye diagrams together with the temperature control IC is successfully simulated in the standard IC design environment.

10:20 (AM Session) & 20:20 (PM Session)

We2C-6: Polarization-insensitive low-crosstalk 8 × 8 silicon photonics switch with 9 × 13.5 cm^2 control board
Konoike, Ryotaro; Matsuura, Hiroyuki; Suzuki, Keijiro; Kawashima, Hitoshi; Ikeda, Kazuhiro
National Institute of Advanced Industrial Science and Technology (AIST) (Japan)
Abstract: An on-chip polarization-diversity 8 × 8 silicon photonics switch with PDL < 0.4 dB, DGD < 1.8 ps and crosstalk < -30 dB over 70-nm bandwidth is demonstrated. The USB-controlled switch module has a compact size of 9 × 13.5 cm^2.

 

SC04 – Techniques for digitally enhancing optical communication

 

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Session Mo2D: Modulation and coding
Monday 07 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Le Taillandier de Gabory, Emmanuel
Chair PM-session: Gavioli, Giancarlo

09:30 (AM Session) & 19:30 (PM Session)

Mo2D-1: (Invited) Challenges in Coding, DSP and Parallel Operation of Quantum Key Distribution and Coherent Data Transmission
Eriksson, Tobias (1); Luis, Ruben (2); Rademacher, Georg (2); Puttnam, Benjamin (2); Gumüs, Kadir (3); Schmalen, Laurent (3); Alvarado, Alex (4); Furukawa, Hideaki (2); Wada, Naoya (2); Hirano, Takuya (5); Sasaki, Masahide (2); Takeoka, Masahiro (2)
(1) Infinera Corp (Sweden), (2) National Institute of Information and Communications Technology (Japan), (3) Karlsruhe Institute of Technology (Germany), (4) Technical University of Eindhoven (The Netherlands), (5) Gakushuin University (Japan)
Abstract: We discuss challenges and recent progress on coding, digital signal processing and joint transmission with classical data channels, for quantum key distribution

10:00 (AM Session) & 20:00 (PM Session)

Mo2D-4: Required and Received SNRs in Coded Modulation
Yoshida, Tsuyoshi (1); Igarashi, Koji (2); Binkai, Masashi (1); Chikamori, Shun (1); Mazur, Mikael (3); Schroeder, Jochen (3); Matsuda, Keisuke (1); Koshikawa, Shota (1); Suzuki, Naoki (1); Karlsson, Magnus (3); Agrell, Erik (3)
(1) Mitsubishi Electric Corporation (Japan), (2) Osaka University (Japan), (3) Chalmers University of Technology (Sweden)
Abstract: Coded modulation techniques aim at reducing the required signal-to-noise ratio (SNR) over the Gaussian channel with an average energy constraint; however, such techniques tend to degrade the received SNR. We studied the balance of required and received SNRs for a realistic system design.

10:10 (AM Session) & 20:10 (PM Session)

Mo2D-5: Sparse-Dense MLC for Peak Power Constrained Channels
Yoshida, Tsuyoshi (1); Igarashi, Koji (2); Karlsson, Magnus (3); Agrell, Erik (3)
(1) Mitsubishi Electric Corporation (Japan), (2) Osaka University (Japan), (3) Chalmers University of Technology (Sweden)
Abstract: Probabilistic amplitude shaping with Maxwell-Boltzmann distributions can degrade system budgets due to a large peak-to-average power ratio at a low spectral efficiency and at a short reach transmission with few optical amplifiers. We propose a novel coded modulation technique, which is useful in such scenarios.

10:20 (AM Session) & 20:20 (PM Session)

Mo2D-6: Label Extension for 32QAM: The Extra Bit for a Better FEC Performance-Complexity Tradeoff
Böcherer, Georg (1); Diedolo, Francesca (2); Pittala, Fabio (1)
(1) Huawei Technologies (Germany), (2) Technical University of Munich (Germany)
Abstract: The FEC performance-complexity tradeoff of 32QAM under label extension to 6 bits is analyzed by simulation and experiment. SNR and complexity reductions are up to 0.3 dB and 30%, respectively, at unaltered baudrate and spectral efficiency.

10:30 (AM Session) & 20:30 (PM Session)

Mo2D-7: Low-PAPR Polarization-Time Code with Improved Four-Dimensional Detection for PDL Mitigation
Ebrahimzad, Hamid; Khoshnevis, Hossein; Chang, Deyuan; Li, Chuandong; Zhang, Zhuhong
Huawei Canada Research Center (Canada)
Abstract: We apply a polarization-time pre-coding together with an improved four-dimensional (4D) detection for polarization dependent loss mitigation. By taking advantage of the correlation between the noises, the proposed scheme outperforms state-of-the-art PDL mitigation methods.

10:40 (AM Session) & 20:40 (PM Session)

Mo2D-8: Joint Pre-emphasis and Partial-response Coding for Spectrum Narrowing Caused by Repeated Optical-node Traversal in Ultra-dense WDM Networks
Okamura, Kazuya; Mori, Yojiro; Hasegawa, Hiroshi
Nagoya University (Japan)
Abstract: We propose a novel pre-filtering scheme that combines pre-emphasis and partial-response coding to mitigate the spectrum narrowing caused by repeated optical-node traversal. Simulations show that our optimum pre-filtering scheme extends the maximum node-hop count and transmission distance by up to 13 and 1040 km, respectively.

 

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Session Tu1D: Transmitter optimisation
Tuesday 08 December 2020     08:00 - 09:20  (AM Session)    &    18:00 - 19:20  (PM Session)
Chair AM-session: Randel, Sebastian
Chair PM-session: Chen, Xi (Vivian)

08:00 (AM Session) & 18:00 (PM Session)

Tu1D-1: (Invited) Multi-Channel Comb Modulation in Single Waveguide Structures
Mazur, Mikael (1); Fontaine, Nicolas K. (1); Chen, Haoshuo (1); Ryf, Roland (1); Neilson, David T. (1); Raybon, Gregory (1); Adamiecki, Andrew (1); Corteselli, Steve (1); Schroeder, Jochen (2)
(1) Nokia Bell Labs (USA), (2) Photonics Laboratory, Chalmers University of Technology (Sweden)
Abstract: Lossless modulation based on unitary spectro-temporal transformations allows modulation of independent waveforms onto lines from a frequency comb without any DeMUX/MUX. We discuss this alternative modulation technique and its application in optical communication and frequency comb generation.

08:30 (AM Session) & 18:30 (PM Session)

Tu1D-4: A Novel Analytical Model of the Benefit of Partial Digital Pre-Emphasis in Coherent Optical Transponders
Zhao, Yu (1); de Jauregui Ruiz, Ivan Fernandez (2); Lorences-Riesgo, Abel (2); Demirtzioglou, Iosif (2); Dris, Stefanos (2); Frignac, Yann (2); Charlet, Gabriel (2)
(1) Huawei Technologies France, Paris Research Center (France), (2) Huawei Technologies France (France)
Abstract: A novel analytical model capable of precisely estimating the performance benefit of employing partial digital pre-emphasis in coherent optical transponders is presented. It accounts for component bandwidth limitations, DAC/ADC quantization noise, driver noise, optical link OSNR and DSP equalization. Its accuracy is verified experimentally.

08:40 (AM Session) & 18:40 (PM Session)

Tu1D-5: (Highly scored) Single-channel 1.61 Tb/s Optical Coherent Transmission Enabled by Neural Network-Based Digital Pre-Distortion
Bajaj, Vinod (1); Buchali, Fred (2); Chagnon, Mathieu (2); Wahls, Sander (1); Aref, Vahid (2)
(1) TU Delft (The Netherlands), (2) Nokia Bell Labs (Germany)
Abstract: We propose a novel digital pre-distortion (DPD) based on neural networks for high-baudrate optical coherent transmitters. We demonstrate experimentally that it outperforms an optimized linear DPD giving 1.2dB SNR gain in a 128GBaud PCS-256QAM single-channel transmission over 80km SSMF resulting a record 1.61Tb/s net rate.

08:50 (AM Session) & 18:50 (PM Session)

Tu1D-6: Look-up Table based Predistortion for Transmitter Employing High-Spectral-Efficiency Modulation Formats
He, Zonglong (1); Vijayan, Kovendhan (1); Mazur, Mikael (2); Karlsson, Magnus (1); Schroeder, Jochen (1)
(1) Chalmers University of Technology (Sweden), (2) Nokia Bell Labs (USA)
Abstract: We propose and experimentally investigate a novel reduced-size look-up table (LUT) for nonlinear transceiver impairment compensation by taking advantage of the inherent periodicity of the symbol pattern-dependent distortions.

09:00 (AM Session) & 19:00 (PM Session)

Tu1D-7: An Autonomous Identification and Pre-distortion Scheme for Cognitive Transceivers using Bayesian Optimization
Ribeiro Sena, Matheus (1); Erkılınç, M. Sezer (1); Dippon, Thomas (2); Shariati, Behnam (1); Emmerich, Robert (1); Fischer, Johannes Karl (1); Freund, Ronald (1)
(1) Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (Germany), (2) Keysight Technologies GmbH (Germany)
Abstract: We propose a Bayesian optimization based DSP algorithm that autonomously tunes Volterra filter design and the parameters of digital pre-distortion schemes to enable transmitter optimal operation. We experimentally validate it for Volterra and memory polynomial filters in a 64 and 80 GBd DP-64QAM b2b setup.

09:10 (AM Session) & 19:10 (PM Session)

Tu1D-8: Up to 115GBaud Faster Than Nyquist PDM-64QAM Based on Tomlinson-Harashima Precoding with Single DAC
Huang, Guoxiu; Nakashima, Hisao; Akiyama, Yuichi; Hoshida, Takeshi
Fujitsu Ltd (Japan)
Abstract: We experimentally demonstrated faster than Nyquist PDM-64QAM based on Tomlinson-Harashima precoding with single DAC. The -30dB bandwidth of the transmitter is lower than 57GHz. The signal speed was improved to 115GBaud by the precoding with an error free operation of more than 1.1 Tb/s throughput.

 

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Session Tu2D: Monitoring and Charactersation Techniques
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Fludger, Chris
Chair PM-session: Okonkwo, Chigo

09:30 (AM Session) & 19:30 (PM Session)

Tu2D-1: (Extended) Digital Backpropagation for Optical Path Monitoring: Loss Profile and Passband Narrowing Estimation
Sasai, Takeo; Nakamura, Masanori; Yamazaki, Etsushi; Yamamoto, Shuto; Nishizawa, Hideki; Kisaka, Yoshiaki
NTT Network Innovation Laboratories (Japan)
Abstract: We propose an optical-path backpropagation algorithm that enables monitoring the loss profile along fibres and the individual frequency-detuning of cascaded optical filters in multi-span links. The method is based on the learning of backpropagation with complex-valued FIR filters and successfully identifies an anomaly optical filter.

10:00 (AM Session) & 20:00 (PM Session)

Tu2D-4: Characterization and Linearization of High Bandwidth Integrated Optical Transmitter Modules
Nölle, Markus (1); Erkılınç, M. Sezer (2); Emmerich, Robert (2); Schmidt-Langhorst, Carsten (3); Elschner, Robert (3); Schubert, Colja (3)
(1) HTW Berlin, University of Applied Sciences (Germany), (2) Fraunhofer Heinrich Hertz Institute (Germany), (3) Fraunhofer Institute for Telecommunications, HHI (Germany)
Abstract: Linearization of a high-bandwidth coherent driver module is demonstrated to enable the use of larger swing for driving signals. It is verified for symbol rates and modulation formats up to 80-GBd and 256-QAM, leading up to 3.7-dB higher transmitter output power compared to linear predistortion.

10:10 (AM Session) & 20:10 (PM Session)

Tu2D-5: Experimental Quantification of Implementation Penalties from Laser Phase Noise for Ultra-High-Order QAM Signals
Chen, Xi; Cho, Junho; Che, Di
Nokia Bell Labs (USA)
Abstract: We experimentally characterize ultra-high order QAM (256-, 1024-, and 4096- QAM) signals’ tolerance to laser phase noise. The studied phase noise covers a wide range from 200 Hz to 10 MHz.

10:20 (AM Session) & 20:20 (PM Session)

Tu2D-6: Experimental validation of MDL emulation and estimation techniques for SDM transmission systems
van den Hout, Menno (1); Ospina, Ruby S.B. (2); van der Heide, Sjoerd (1); Alvarado Zacarias, Juan Carlos (3); Antonio-Lopez, Jose Enrique (4); Bigot-Astruc, Marianne (5); Amezcua Correa, Adrian (5); Sillard, Pierre (5); Amezcua-Correa, Rodrigo (6); Augusto de Arruda Mello, Darli (7); Okonkwo, Chigo (1)
(1) Eindhoven University of Technology (The Netherlands), (2) DECOM, School of Electrical and Computer Engineering, State University of Campinas (Brazil), (3) CREOL / Nokia Bell Labs (USA), (4) CREOL, UCF (USA), (5) Prysmian Group (France), (6) CREOL (USA), (7) University of Campinas (Brazil)
Abstract: We experimentally validate a mode-dependent loss (MDL) estimation technique employing a correction factor to remove the MDL estimation dependence on the SNR when using a minimum mean square error (MMSE) equalizer. A reduction of the MDL estimation error is observed for both transmitter-side and in-span MDL emulation.

10:30 (AM Session) & 20:30 (PM Session)

Tu2D-7: Ultra-long-time (0.8 s) characterization of laser phase noise with high temporal resolution (800 ps) based on heterodyne reception with FPGA data acquisition
Igarashi, Koji (1); Kiwata, Hayato (1); Kikuta, Masahiro (2); Shigihara, Masahiro (2)
(1) Osaka University (Japan), (2) NEC Platforms, Ltd. (Japan)
Abstract: Laser phase noise can be measured for 0.8 s with a time resolution of 800 ps using coherent detection with FPGA data acquisition, and illustrated by field spectrogram and very wide FM noise spectra from near DC.

10:40 (AM Session) & 20:40 (PM Session)

Tu2D-8: Side Effect of Normal Vector Recovery based Polarization Demultiplexing in Stokes Space and the Countermeasure
Li, Jingnan (1); Fan, Yangyang (1); Tao, Zhenning (1); Nakashima, Hisao (2); Hoshida, Takeshi (2)
(1) Fujitsu R&D Center (China), (2) Fujitsu Ltd (Japan)
Abstract: We deeply analyze the side effect of present polarization demultiplexing in Stokes space and propose an enhanced method by compensating residual phase retarder. Experiments show that the retarder compensation is indispensable and the proposed method tracks 1MHz polarization change with only 0.4dB Q penalty.

 

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Session We1D: Machine learning for transceivers
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Zibar, Darko
Chair PM-session: Zibar, Darko

08:00 (AM Session) & 18:00 (PM Session)

We1D-1: (Highly scored) Recurrent Neural Network Soft-Demapping for Nonlinear ISI in 800Gbit/s DWDM Coherent Optical Transmissions
Schaedler, Maximilian (1); Pittala, Fabio (2); Böcherer, Georg (3); Bluemm, Christian (3); Kuschnerov, Maxim (4); Pachnicke, Stephan (5)
(1) Huawei Munich Research Center / Kiel University (CAU), Chair of Communications (Germany), (2) Huawei Technologies (Germany), (3) Huawei Canada Research Center (Germany), (4) Huawei Munich Research Center (Germany), (5) Kiel University (CAU), Chair of Communications (Germany)
Abstract: Optical transmission systems suffer from ISI induced by nonlinear components. As a countermeasure, a recurrent neural network soft-demapper is proposed and benchmarked against a combination of Volterra equalizer, noise whitening filter and soft-output Viterbi-algorithm. A substantial gain up to 1.52dB in 800G-DWDM-600km measurements is achieved.

08:10 (AM Session) & 18:10 (PM Session)

We1D-2: Experimental Verification of Complex-Valued Artificial Neural Network for Nonlinear Equalization in Coherent Optical Communication Systems
Freire, Pedro J. (1); Neskorniuk, Vladislav (1); Napoli, Antonio (2); Spinnler, Bernhard (2); Costa, Nelson (3); Prilepsky, Jaroslaw E. (1); Riccardi, Emilio (4); Turitsyn, Sergei (1)
(1) Aston University (United Kingdom), (2) Infinera (Germany), (3) Infinera (Portugal), (4) Telecom Italia (Italy)
Abstract: We propose a novel design of neural network for mitigating the fiber nonlinearity, employing a structure based on physical modelling. The neural network achieved nearly 5 times BER reduction in a field trial when transmitting WDM 200G DP-16QAM over a 620 km legacy link.

08:20 (AM Session) & 18:20 (PM Session)

We1D-3: Artificial Neural Network-Based-Receiver for Eigenvalue-Modulated Signal in Presence of Optical CFO
Mishina, Ken (1); Yoshida, Yuki (2); Hisano, Daisuke (1); Maruta, Akihiro (1)
(1) Osaka University (Japan), (2) National Institute of Information and Communications Technology (NICT) (Japan)
Abstract: We demonstrate the demodulation of an eigenvalue-modulated signal combining an artificial neural network with a CFO compensation. The proposed demodulator achieves successful demodulation with power penalty < 1 dB in the presence of CFO within 1 GHz at 2.5 Gb/s in experiments.

08:30 (AM Session) & 18:30 (PM Session)

We1D-4: Performance and Complexity Evaluation of Recurrent Neural Network Models for Fibre Nonlinear Equalization in Digital Coherent Systems
Deligiannidis, Stavros (1); Mesaritakis, Charis (2); Bogris, Adonis (1)
(1) University of West Attica (Greece), (2) University of the Aegean (Greece)
Abstract: We investigate the complexity and performance of recurrent neural network models as post-processing units for the compensation of fibre nonlinearities in digital coherent systems carrying polarization multiplexed 16-QAM signals. We show that RNNs are promising nonlinearity compensators especially in dispersion unmanaged systems at reasonable comple

08:40 (AM Session) & 18:40 (PM Session)

We1D-5: NN-based PCS distribution optimization for practical channels
Li, Xueyang (1); Xing, Zhenping (1); Md, Samiul Alam (1); Jacques, Maxime (1); Lessard, Stephane (2); Plant, David (1)
(1) McGill University (Canada), (2) Ericsson (Canada)
Abstract: We propose an optimization scheme for the distribution of probabilistically shaped signals in practical non-AWGN channels based on a neural network and genetic algorithm. The optimized input distribution enables 23.5% higher throughput than the Maxwell-Boltzmann distribution in a short reach channel with a SiP transmitter.

 

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Session We2D: Equalizers and decoders for IMDD systems
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Lu, Chao
Chair PM-session: Okonkwo, Chigo

09:30 (AM Session) & 19:30 (PM Session)

We2D-1: (Extended) 93-Gbaud PAM4 O-Band Transmission Using Nonlinear Spectral Shaping with Transition-Likelihood-Based Decoding
Yamamoto, Shuto (1); Taniguchi, Hiroki (2); Nakamura, Masanori (1); Kisaka, Yoshiaki (1)
(1) NTT Network Innovation Laboratories (Japan), (2) NTT Corporation (Japan)
Abstract: We propose a combination scheme of nonlinear differential coding and transition-likelihood-based decoding to realize spectral shaping and enhance the tolerance to bandwidth limitation in high-baudrate short-reach IM-DD system. We demonstrate 186-Gb/s 10-km transmission through an O-band experiment with the 3-dB bandwidth of 14 GHz.

10:00 (AM Session) & 20:00 (PM Session)

We2D-4: Experimental Demonstration of Optoelectronic Equalization for Short-reach Transmission with Reservoir Computing
Magalhães Ranzini, Stenio (1); Dischler, Roman (2); Da Ros, Francesco (1); Bülow, Henning (2); Zibar, Darko (1)
(1) DTU Fotonik, Technical University of Denmark (Denmark), (2) Nokia Bell Labs (Germany)
Abstract: A receiver with shared complexity between optical and digital domains is experimentally demonstrated. Reservoir computing is used to equalize up to 4 directly-detected optically filtered spectral slices of a 32 GBd OOK signal over up to 80 km of SMF.

10:10 (AM Session) & 20:10 (PM Session)

We2D-5: Improvement of Tomlinson-Harashima Precoding Performance for Bandwidth-Limited IM/DD Systems
Wettlin, Tom (1); Calabro, Stefano (2); Rahman, Talha (3); Hossain, Md Sabbir-Bin (2); Wei, Jinlong (2); Stojanovic, Nebojsa (2); Pachnicke, Stephan (4)
(1) Christian-Albrechts-Universitaet zu Kiel (Germany), (2) Huawei Technologies Duesseldorf GmbH (Germany), (3) Huawei Technologies German Research Center (Germany), (4) Kiel University (CAU), Chair of Communications (Germany)
Abstract: We propose to apply an additional filter between Tomlinson-Harashima precoding (THP) and inverse channel predistortion to match the received signal spectrum with the THP target spectrum. 92 GBd PAM4 back-to-back and 1 km SSMF experiments show an improved performance by the additional filter.

10:20 (AM Session) & 20:20 (PM Session)

We2D-6: Proposal of LUT-based transmitter nonlinearity compensator with precursor compensation for Short-Reach IM/DD PAM Signalling with Tomlinson-Harashima Precoding (THP)
Kikuchi, Nobuhiko; Hirai, Riu
Research & Development Gr., Hitachi Ltd. (Japan)
Abstract: We propose a novel Look-Up-Table-based transmitter non-linearity compensator for Tomlinson-Harashima Precoding (THP) based PAM signalling with the capability of both pre-cursor and post-cursor compensation, and experimentally show its effectiveness to improve BER performance better than Rx-side Volttera-series equalizer in 40-GBaud PAM4 signalling.

10:30 (AM Session) & 20:30 (PM Session)

We2D-7: Rate Adaptation by Low-Cost Complementary Mapper Shaping for Short-Reach IM-DD Systems
Che, Di (1); Cho, Junho (1); Chen, Haoshuo (1); Tian, Chao (2)
(1) Nokia Bell Labs (USA), (2) Source Photonics (USA)
Abstract: We propose a low-cost probabilistic shaping method called the complementary mapper (CM) shaping, and experimentally demonstrate a wide range of rate adaptation using the CM shaping in an intensity modulation and direct detection (IM-DD) system with 80-GBaud pulse-amplitude modulation (PAM).

 

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Session Th1D: End to end and supervised learning of optical channels
Thursday 10 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Lavery, Domanic
Chair PM-session: Ip, Ezra

08:00 (AM Session) & 18:00 (PM Session)

Th1D-1: (Invited) End-to-End Learning in Optical Fiber Communications: Experimental Demonstration and Future Trends
Karanov, Boris (1); Oliari, Vinicius (1); Chagnon, Mathieu (2); Liga, Gabriele (1); Alvarado, Alex (1); Aref, Vahid (2); Lavery, Domanic (3); Bayvel, Polina (3); Schmalen, Laurent (4)
(1) Technical University of Eindhoven (The Netherlands), (2) Nokia Bell Labs (Germany), (3) University College London (United Kingdom), (4) Karlsruhe Institute of Technology (Germany)
Abstract: Fiber-optic auto-encoders are demonstrated on an IM/DD test-bed, outperforming state-of-the-art signal processing. Algorithms for end-to-end optimization using experimentally collected data are discussed. The end-to-end learning framework is extended for performing optimization of the symbol distribution in probabilistically-shaped coherent systems

08:30 (AM Session) & 18:30 (PM Session)

Th1D-4: End-to-End Deep Learning for Phase Noise-Robust Multi-Dimensional Geometric Shaping
Talreja, Veeru (1); Koike-Akino, Toshiaki (2); Wang, Ye (2); Millar, David (2); Kojima, Keisuke (2); Parsons, Kieran Parsons (2)
(1) West Virginia University (USA), (2) Mitsubishi Electric Research Lab (MERL) (USA)
Abstract: We propose an end-to-end deep learning model for phase noise-robust optical communi-cations. A convolutional embedding layer is integrated with a deep autoencoder for multi-dimensionalconstellation design to achieve shaping gain. The proposed model offers a significant gain up to 2 dB

08:40 (AM Session) & 18:40 (PM Session)

Th1D-5: Simplifying the Supervised Learning of Kerr Nonlinearity Compensation Algorithms by Data Augmentation
Neskorniuk, Vladislav (1); Freire, Pedro J. (1); Napoli, Antonio (2); Spinnler, Bernhard (2); Schairer, Wolfgang (2); Prilepsky, Jaroslaw E. (1); Costa, Nelson (2); Turitsyn, Sergei (1)
(1) Aston University (United Kingdom), (2) Infinera (Germany), (2) Infinera (Portugal)
Abstract: We propose a data augmentation technique to improve performance and decrease complexity of the supervised learning of nonlinearity compensation algorithms. We demonstrate both numerically and experimentally that the augmentation allows reducing the training dataset size up to 6 times while keeping the same post-compensation bit-error rate.

08:50 (AM Session) & 18:50 (PM Session)

Th1D-6: Convolutional Neural Network Based Blind Estimation of Generalized Mutual Information for Optical Communication
Ackermann, Johannes (1); Schaedler, Maximilian (2); Bluemm, Christian (1)
(1) Huawei Canada Research Center (Germany), (2) Huawei Munich Research Center / Kiel University (CAU), Chair of Communications (Germany)
Abstract: We propose blind GMI estimation from received constellation diagrams, based on a convolutional neural network. For coherent optical transmissions between 600Gb/s and 960Gb/s with varying modulation schemes, mean errors of 1.4% without and 0.8% with channel specific fine-tuning are achieved, significantly outperforming previous methods.

 

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Session Th2D: Phase Retrieval and Receiver optimisation
Thursday 10 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Jaouen, Yves
Chair PM-session: Ip, Ezra

09:30 (AM Session) & 19:30 (PM Session)

Th2D-1: (Invited) Phase-Retrieving Coherent Reception and its Sample Complexity
Yoshida, Yuki; Umezawa, Toshimasa; Kanno, Atsushi; Yamamoto, Naokatsu
National Institute of Information and Communications Technology (NICT) (Japan)
Abstract: Low-complexity coherent receivers based on direct detection are revisited from the viewpoint of sample complexity, number of magnitude samples per symbol in phase retrieval (PR). Recent experimental results on the carrier-less PR receiver by using a 2-D photodetector array are also reported.

10:00 (AM Session) & 20:00 (PM Session)

Th2D-4: Single-Pixel IQ Monitor via Computational Coherent Reception with Widely Linear Phase Retrieval
Yoshida, Yuki (1); Tanimura, Takahito (2); Yoshida, Setsuo (3); Hoshida, Takeshi (3); Yamamoto, Naokatsu (1)
(1) National Institute of Information and Communications Technology (NICT) (Japan), (2) Fujitsu Limited (Currently with Hitachi Ltd.) (Japan), (3) Fujitsu Limited (Japan)
Abstract: For in-service and in-field monitoring of frequency-dependent IQ imbalance in optical IQ modulators, we propose a low-complexity IQ monitor using a single photodetector based on phase retrieval. The feasibility of the proposed single-pixel IQ monitor was demonstrated experimentally with a 63.25-Gbaud 16QAM signal.

10:10 (AM Session) & 20:10 (PM Session)

Th2D-5: Linearization of Optical IMDD Transmission Systems Using Accelerated Iterative Algorithms
Hu, Shaohua (1); Tang, Jianming (2); Zhang, Jing (1); Qiu, Kun (1)
(1) University of Electronic Science and Technology of China (China), (2) Bangor University (United Kingdom)
Abstract: We propose two algorithms accelerating DSP processes of linearizing IMDD systems. C-band 100 Gb/s PAM4 transmissions over 200 km SSMFs are demonstrated numerically without any modifications to installed physical layer systems. The algorithms significantly outperform conventional nonlinear equalization and iterative algorithms.

10:20 (AM Session) & 20:20 (PM Session)

Th2D-6: Joint Optimization of Phase Retrieval and Forward Error Correcting for Direct Detection Receiver
Chen, Bin (1); Huang, Hanzi (2); Chen, Haoshuo (3); Lei, Yi (1); Fontaine, Nicolas K. (3); Ryf, Roland (3); Zhang, Qianwu (2); Song, Yingxiong (2)
(1) Hefei University of Technology (China), (2) Shanghai University (China), (3) Nokia Bell Labs (USA)
Abstract: We have experimentally demonstrated that performance of a phase retrieval (PR) receiver in optical systems can be significantly improved by a joint optimization of PR pilots overhead and FEC coding overhead, enabling a higher data rate and up to 66% reduced number of PR iterations.

10:30 (AM Session) & 20:30 (PM Session)

Th2D-7: Chromatic Dispersion-Aware Carrier-Phase Estimation for Digital Subcarrier Multiplexing Systems
Neves, Manuel (1); Monteiro, Paulo (2); Guiomar, Fernando (2)
(1) Instituto de Telecomunicações (Portugal), (2) Instituto de Telecomunicações, University of Aveiro (Portugal)
Abstract: We propose a novel Dual-Reference Subcarrier (DRS) algorithm for improved carrier-phase estimation in long-haul Multi-Subcarrier (MSC) systems. For a 64Gbaud 64QAM MSC signal, the DRS algorithm is shown to enable penalty-free operation with symbol-rates per subcarrier as low as 2 Gbaud.

10:40 (AM Session) & 20:40 (PM Session)

Th2D-8: Filter Response Aware Iterative KK Algorithm for VSB systems
Xing, Zhenping (1); Li, Xueyang (1); Mousa Pasandi, Mohammad (2); O'Sullivan, Maurice (2); Plant, David V. (1)
(1) McGill University (Canada), (2) Ciena (Canada)
Abstract: We propose a filter response aware iterative KK algorithm to improve the accuracy of SSB signal reconstruction in a vestigial sideband (VSB) system. We experimentally and numerically show that this algorithm outperforms conventional KK algorithms in a 100 Gb/s VSB system.

 

SC05 - Optical Transmission systems

 

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Session Mo1E: High capacity systems
Monday 07 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Hoshida, Takeshi
Chair PM-session: Turkiewicz, Jaroslaw

08:00 (AM Session) & 18:00 (PM Session)

Mo1E-1: (Invited) Amplified transmission beyond C- and L- bands: doped fibre amplifiers for 1250-1450 nm range
Mikhailov, Vitaly; Luo, Jiawei; Inniss, Daryl; Yan, Man; Sun, Yingzhi; Puc, Gabriel S.; Windeler, Robert S.; Westbrook, Paul S.; Dulashko, Yuriy; DiGiovanni, David J.
OFS Laboratories (USA)
Abstract: Growing capacity demand of fibre optic transmission systems increased interest to multispan transmission outside traditional C- and L- bands. In this paper we review recent progress of doped fibre amplifiers designed for 1250-1450 nm range. We will also discuss various telecom and DCI transmission scenarios.

08:30 (AM Session) & 18:30 (PM Session)

Mo1E-4: 52.1 Tb/s C-band DCI transmission over DCI distances at 1.49 Tb/s/lambda
Buchali, Fred (1); Aref, Vahid (1); Chagnon, Mathieu (1); Dischler, Roman (1); Schmid, Rolf (2); Hettrich, Horst (2); Moeller, Michael (3)
(1) Nokia Bell Labs (Germany), (2) Micram Microelectronics GmbH (Germany), (3) Micram (Germany)
Abstract: Not available

08:40 (AM Session) & 18:40 (PM Session)

Mo1E-5: Increased Reach of Long-Haul Transmission using a Constant-Power 4D Format Designed Using Neural Networks
Essiambre, Rene-Jean (1); Ryf, Roland (1); Kodialam, Murali (1); Chen, Bin (2); Mazur, Mikael (1); Bonetti, Juan (3); Veronese, Riccardo (1); Huang, Hanzi (1); Gupta, Ankit (4); Aït Aoudia, Fayçal (5); Burrows, Ellsworth (1); Grosz, Diego (3); Palmieri, Luca (6); Chen, Xi (1); Fontaine, Nicolas K. (1); Chen, Haoshuo (1); Sellathurai, Mathini (4)
(1) Nokia Bell Labs (USA), (2) Hefei University of Technology (China), (3) Balseiro Institute (Argentina), (4) Heriot Watt University (United Kingdom), (5) Nokia Bell Labs (France), (6) University of Padova (Italy)
Abstract: We demonstrate ultra long-haul transmission of a new four-dimensional (4D) modulation format having low generalized mutual information (GMI) gap to Shannon and designed using neural networks. We experimentally demonstrate an improved transmission distance.

08:50 (AM Session) & 18:50 (PM Session)

Mo1E-6: Transmission of Hybrid Probabilistically and Geometrically Shaped 256QAM at 49-Gbaud in a 50-GHz Spacing WDM System
Ding, Junjie (1); Wang, Kaihui (1); Kong, Miao (1); Liu, Cuiwei (1); Zhou, Wen (1); Zhao, Li (1); Liu, Bo (2); Xin, Xiangjun (3); Yu, Jianjun (1)
(1) Fudan University (China), (2) Nanjing University of Information Science & Technology (China), (3) Beijing University of Posts and Telecommunications (China)
Abstract: We experimentally demonstrated 10×614.4-Gbps 256QAM coherent WDM transmission over 400-km SSMF based on a new hybrid probabilistically and geometrically shaped signal with 50-GHz frequency spacing, obtaining 2-dB shaping gain compared with regular 256QAM.

 

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Session Mo2E: SDM transmission systems
Monday 07 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Kobayashi, Takayuki
Chair PM-session: Boffi, Pierpaolo

09:30 (AM Session) & 19:30 (PM Session)

Mo2E-1: (Highly scored) Transmission over Randomly-Coupled 4-Core Fiber inField-Deployed Multi-Core Fiber Cable
Ryf, Roland (1); Marotta, Andrea (2); Mazur, Mikael (1); Fontaine, Nicolas K. (1); Chen, Haoshuo (1); Hayashi, Tetsuya (3); Nagashima, Takuji (3); Nakanish, Tetsuya (3); Morishima, Tetsu (3); Graziosi, Fabio (2); Mecozzi, Antonio (2); Antonelli, Cristian (2)
(1) Nokia Bell Labs (USA), (2) University of L'Aquila (Italy), (3) Sumitomo Electric Industries Ltd. (Japan)
Abstract: We show combined SDM/WDM transmission over a deployed and cabled 4-core coupled-core fibers over distances up to 4014 km for QPSK and 2768 km for 16QAM signals. The results confirm the technical viability of coupled-core fibers in the field.

09:40 (AM Session) & 19:40 (PM Session)

Mo2E-2: Experimental Verification on Digital Back Propagation Gain in MCF transmission over 6020-km Uncoupled and Coupled 4-Core Fibres
Beppu, Shohei; Soma, Daiki; Takahashi, Hidenori; Yoshikane, Noboru; Morita, Itsuro; Tsuritani, Takehiro
KDDI Research Inc. (Japan)
Abstract: We experimentally verify the nonlinear compensation gain of digital back propagation in ultra-long-haul 4-core fibre transmissions over 6020 km. The gain was 1.1 dB in the uncoupled core transmission. By contrast, this gain was not observed in the coupled core transmission with spatial modal dispersion.

09:50 (AM Session) & 19:50 (PM Session)

Mo2E-3: Multi-Span Transmission over 65 km 38-Core 3-Mode Fiber
Rademacher, Georg (1); Puttnam, Benjamin (1); Luis, Ruben (1); Sakaguchi, Jun (1); Klaus, Werner (1); Eriksson, Tobias (2); Awaji, Yoshinari (1); Hayashi, Tetsuya (3); Nagashima, Takuji (3); Nakanish, Tetsuya (3); Taru, Toshiki (3); Takahata, Taketoshi (4); Kobayashi, Tetsuya (4); Furukawa, Hideaki (1)
(1) National Institute of Information and Communications Technology (Japan), (2) Infinera (Sweden), (3) Sumitomo Electric Industries Ltd. (Japan), (4) Optoquest CO.,Ltd (Japan)
Abstract: We demonstrate multi-span transmission over 65 (5x13) km few-mode multi-core fiber by transmitting 368x24.5 GBaud C- and L-band signals with QPSK, 16- or 64 QAM modulation. We analyze each core-combination’s transmission channel characteristics and identify mode-dependent loss as the main performance limitation.

10:00 (AM Session) & 20:00 (PM Session)

Mo2E-4: Performance Comparison for Standard Cladding Ultra-Low-Loss Uncoupled and Coupled 4-Core Fibre Transmission over 15,000 km
Soma, Daiki; Beppu, Shohei; Takahashi, Hidenori; Yoshikane, Noboru; Morita, Itsuro; Tsuritani, Takehiro
KDDI Research, Inc. (Japan)
Abstract: We compared the ultra-long-haul multi-core fibre (MCF) transmission performance of standard cladding ultra-low-loss uncoupled and coupled 4-core fibres. From the results obtained, 15,652-km transmission in uncoupled MCF and 16,856-km transmission in coupled MCF was demonstrated using a centre channel of 16-WDM 24-Gbaud DP-QPSK signals.

10:10 (AM Session) & 20:10 (PM Session)

Mo2E-5: 1 Tbit/s/λ Transmission Over a 130 km Link Consisting of Graded-Index 50 μm Core Multi-Mode Fiber and 6LP Few-Mode Fiber
van den Hout, Menno (1); van der Heide, Sjoerd (1); van Weerdenburg, John (1); Bigot-Astruc, Marianne (2); Amezcua Correa, Adrian (2); Antonio-Lopez, Jose Enrique (3); Alvarado Zacarias, Juan Carlos (4); Sillard, Pierre (2); Amezcua-Correa, Rodrigo (5); Okonkwo, Chigo (1)
(1) Eindhoven University of Technology (The Netherlands), (2) Prysmian Group (France), (3) CREOL, UCF (USA), (4) CREOL / Nokia Bell Labs (USA), (5) CREOL (USA)
Abstract: We demonstrate 1 Tbit/s/λ single-span transmission over a heterogeneous link consisting of graded-index 50 μm core multi-mode fiber and 6LP few-mode fiber using a Kramers-Kronig receiver structure. Furthermore, the link budget increase by transmitting only three modes while employing more than three receivers is investigated.

10:20 (AM Session) & 20:20 (PM Session)

Mo2E-6: Fast Convergence by Machine Learning Optimizer for Adaptive MIMO Equalizer Used in SDM Transmission over Coupled-Core 4-Core Fiber and 4-Core EDFA
Arikawa, Manabu; Noguchi, Hidemi
NEC Corporation (Japan)
Abstract: We applied several optimizers from the machine learning field to an adaptive MIMO equalizer for SDM transmission. We experimentally compared their convergence properties in a SDM transmission over a 52-km coupled-core 4-core fiber and 4-core EDFA and showed over 22% faster convergence with Adam.

 

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Session Tu1E: Transmission with direct detection
Tuesday 08 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Kim, Hoon
Chair PM-session: Plant, David

08:00 (AM Session) & 18:00 (PM Session)

Tu1E-1: (Invited) Optical Single-Sideband Direct Detection Transmissions: Recent Progress and Commercial Aspects
Le, Son T. (1); Schuh, Karstern (2); Buchali, Fred (2); Drenski, Tomislav (3); Hills, Andrew (3); King, Malcolm (3); Sizer, Theodore (1)
(1) Nokia Bell Labs (USA), (2) Nokia Bell Labs (Germany), (3) Socionext Europe (United Kingdom)
Abstract: We discuss recent progress and commercialization of optical single-sideband direct detection systems with data rate of 100 Gb/s and beyond. Critical hardware requirements and signal processing challenges, especially for the cancellation of signal-signal beat interference, are reviewed

08:30 (AM Session) & 18:30 (PM Session)

Tu1E-4: 100 GSa/s BiCMOS Analog Multiplexer Based 100 GBd PAM Transmission over 20 km Single-Mode Fiber in the C-Band
Schuh, Karsten (1); Hu, Qian (1); Collisi, Michael (2); Dischler, Roman (1); Chagnon, Mathieu (1); Buchali, Fred (1); Hettrich, Horst (3); Schmid, Rolf (3); Möller, Michael (2)
(1) Nokia Bell Labs (Germany), (2) Saarland University (Germany), (3) Micram Microelectronics GmbH (Germany)
Abstract: We show application of a novel BiCMOS analog multiplexer for 100 GBd PAM-4, -6 and -8 signal generation. Up to 20 km C-band fiber transmission of optical PAM signals is successfully demonstrated with tunable dispersion compensator and SOA pre-amplified receiver.

08:40 (AM Session) & 18:40 (PM Session)

Tu1E-5: 120 Gbaud IM/DD PAM-4 Transmission over 1.5 km SMF Using a Single CMOS DAC with Hu, Qian; Schuh, Karsten; Borkowski, Robert; Buchali, Fred; Bülow, Henning
Nokia Bell Labs (Germany)
Abstract: We experimentally demonstrate 1.5-km C-band transmission of 120-Gbaud (240-Gbit/s) PAM-4 signal using DAC/ADCs with bandwidths compatible with CMOS technology. This ultrahigh symbol rate is enabled by a combination of a precoder and a bandwidth-constraining filter at the transmitter and a 1-to-4 analog demultiplexing frontend at the receiver.

08:50 (AM Session) & 18:50 (PM Session)

Tu1E-6: Time Skew-based Filter-free VSB Nyquist PAM-4/6 Generation and 80km SSMF Transmission with Direct Detection
Zhu, Yixiao (1); Li, Longsheng (2); Miao, Xin (1); Hu, Weisheng (1)
(1) Shanghai Jiao Tong University (China), (2) Technical University of Denmark (Denmark)
Abstract: We propose a novel filter-free VSB generation scheme based on time skew with single DAC, and experimentally transmit 38Gbaud Nyquist PAM-4/6 signals over 80km dispersion uncompensated SSMF link with 40GSa/s ADC, achieving 7% and 20% HD-FEC thresholds, respectively.

09:00 (AM Session) & 19:00 (PM Session)

Tu1E-7: 255-Gbps PAM-8 O-band Transmission through 10-km SMF under 14-GHz Bandwidth Limitation Using MLSE Based on Nonlinear Channel Estimation with Cutdown Volterra Kernels.
Taniguchi, Hiroki (1); Yamamoto, Shuto (2); Nakamura, Masanori (2); Kisaka, Yoshiaki (2)
(1) NTT Corporation (Japan), (2) NTT Network Innovation Laboratories (Japan)
Abstract: We demonstrate 255-Gbps/λ PAM-8 transmission over 10-km with a BER below the 7% HD-FEC threshold under a 14-GHz bandwidth limitation and −6.3-ps/nm chromatic dispersion by applying MLSE based on nonlinear channel estimation with reduced computational complexity.

 

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Session Tu2E: Long haul and submarine transmission
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Schroder, Jochen
Chair PM-session: Pilipetskii, Alexei

09:30 (AM Session) & 19:30 (PM Session)

Tu2E-1: (Invited) Vision for Next Generation Undersea Optical Fibers and Cable Designs
Spalding, Marsha; Bolshtyansky, Maxim; Sinkin, Oleg
SubCom (USA)
Abstract: Vision for Next Generation Undersea Optical Fibers and Cable Designs

10:00 (AM Session) & 20:00 (PM Session)

Tu2E-4: Field Trial Demonstration over Live Traffic Network of 400 Gb/s Ultra-Long Haul and 600 Gb/s Regional Transmission
Arnould, Aymeric (1); Mardoyan, Haik (1); Pulka, Florian (2); Ghazisaeidi, Amirhossein (1); Aref, Vahid (3); Bordez, Bruno (2); Tondo, Paulo (2); Dalle Cort, Liana (4); Pincemin, Erwan (5); Brochier, Nicolas (5); Chatter, Frederic (5); Guillot-Common, Veronique (6); Bertran-Pardo, Oriol (4); Frascolla, Massimo (4); Luchesini, Luca (4); Renaudier, Jeremie (1)
(1) Nokia Bell Labs (France), (2) Nokia IP Optical Networks (France), (3) Nokia Bell Labs (Germany), (4) Nokia IP Optical Networks (Italy), (5) Orange Labs Networks (France), (6) Orange International Networks Infrastructures and Services (France)
Abstract: We demonstrate the successful trial of 400 to 600 Gb/s per carrier over Orange live network. Based on Nokia PSE-Vs technology, 400 and 600 Gb/s channels were transported up to 3446 and 1100 km respectively, thanks to probabilistic constellation shaping and flexible symbol rate optimization.

10:10 (AM Session) & 20:10 (PM Session)

Tu2E-5: Experimental Characterization of Power Efficiency for Power-Limited SDM Submarine Transmission Systems
Downie, John D. (1); Hurley, Jason (1); Liang, Xiaojun (1); Himmelreich, James (2); Srinivas, Hrishikesh (3); Krause Perin, Jose (3); Augusto de Arruda Mello, Darli (4); Kahn, Joseph (3)
(1) Corning Incorporated (USA), (2) Corning Research and Development Corporation (USA), (3) Stanford University (USA), (4) University of Campinas (Brazil)
Abstract: We examine fiber capacity per unit amplifier pump power relevant to power-constrained spatial-division-multiplexing submarine systems via extensive amplified transmission experiments and modeling. Our results suggest the utility of amplifier pump powers as low as 20 mW and output powers as low as 6.5 dBm.

10:20 (AM Session) & 20:20 (PM Session)

Tu2E-6: Modeling of Guided Acoustic Waveguide Brillouin Scattering Impact in Long-Haul Fiber Optic Transmission Systems
Ivanov, Viacheslav (1); Downie, John D. (2); Makovejs, Sergejs (2)
(1) Corning (Russian Federation), (2) Corning Incorporated (USA)
Abstract: We perform analytical modelling of the GAWBS effect impact in long-haul coherent transmission systems for quasi- and deeply linear power regimes, with inclusion of Tx/Rx penalties. We show that beyond effective area, GAWBS SNR penalty depends on propagation distance, span length and fiber attenuation.

 

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Session We1E: Novel concepts in optical communications
Wednesday 09 December 2020     08:00 - 09:20  (AM Session)    &    18:00 - 19:20  (PM Session)
Chair AM-session: Gunning, Fatima
Chair PM-session: Hanik, Norbert

08:00 (AM Session) & 18:00 (PM Session)

We1E-1: (Invited) The practicality of commercial QKD in optical transmission systems
Eisenberg, Hagai
The Hebrew University of Jerusalem (Israel)
Abstract: Not available

08:30 (AM Session) & 18:30 (PM Session)

We1E-4: Security-Enhanced 10,118-km Single-Channel 40-Gbit/s Transmission Using PSK Y-00 Quantum Stream Cipher
Tanizawa, Ken; Futami, Fumio
Tamagawa University (Japan)
Abstract: We demonstrate the first ultra-long haul transmission of Y-00 quantum-noise randomized stream cipher. 40-Gbit/s QPSK signal is encrypted by 2^16-level phase randomization with a seed key. Irreducible security based on signal masking by quantum (shot) noise and adequate signal quality after 10,118-km SMF transmission are achieved.

08:40 (AM Session) & 18:40 (PM Session)

We1E-5: (Extended) Real-time, Software-Defined, GPU-Based Receiver Field Trial
van der Heide, Sjoerd (1); Luis, Ruben (2); Puttnam, Benjamin (2); Rademacher, Georg (2); Koonen, A.M.J. (1); Shinada, Satoshi (2); Awaji, Yoshinari (2); Okonkwo, Chigo (1); Furukawa, Hideaki (2)
(1) Eindhoven University of Technology (The Netherlands), (2) National Institute of Information and Communications Technology (Japan)
Abstract: We demonstrate stable real-time operation of a software-defined, GPU-based receiver over a metropolitan network. Massive parallelization is exploited for implementing direct-detection and coherent Kramers-Kronig detection in real time at 2 and 1 GBaud, respectively.

09:10 (AM Session) & 19:10 (PM Session)

We1E-8: Neural Networks based Equalization of Experimental Transmission using the Nonlinear Fourier Transformation
Koch, Jonas (1); Chan, Ken (2); Kühl, Sebastian (1); Schaeffer, C. G. (2); Pachnicke, Stephan (1)
(1) Kiel University, Chair of Communications (Germany), (2) Helmut Schmidt Universität Hamburg, Radio-Frequency Engineering & Photonics (Germany)
Abstract: We use cross-correlations between continuous and discrete parts of the nonlinear Fourier spectrum to train an equalizer based on neural networks. In a dual-polarization transmission experiment reach improvements of more than 2000 km and up to beyond 5000 km were achieved.

 

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Session We2E: Unrepeatered transmission
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Wu, Jian
Chair PM-session: Charlet, Gabriel

09:30 (AM Session) & 19:30 (PM Session)

We2E-1: (Extended) 20.6 Pb/s·km Unrepeatered Transmission without ROPA: UWB SOA Booster and Backward Raman Amplification
Ionescu, Maria (1); Arnould, Aymeric (1); Le Gac, Dylan (1); Etienne, Sophie (2); Ghazisaeidi, Amirhossein (1); Duval, Mathieu (2); Bastide, Christian (2); Bissessur, Hans (2); Renaudier, Jeremie (1)
(1) Nokia Bell Labs (France), (2) Alcatel Submarine Networks (France)
Abstract: Semiconductor optical amplification complemented by backward-propagating Raman pumps enables 100 nm ultra-wideband transmission which, when coupled with wavelength-adaptive modulation and SD-FEC, gives a net throughput of 80.2 Tb/s over a single span of 257.5 km.

10:00 (AM Session) & 20:00 (PM Session)

We2E-4: 16 Tbit/s Real-time Unrepeated Transmission over 420 km G.654E Fiber
Yu, Yi (1); Li, Junjie (2); Zhang, Anxu (2); Lv, Kai (2); Yang, Yusen (2); Wang, Haiqiang (2); Yan, Fei (2); Tian, Yue (1); Lu, Peng (1); Zhenzhen, Zhang (1); Jiang, Lvhui (1); Pan, Deng (1); Chen, Jie (1); Li, Liangchuan (3)
(1) Huawei Technologies Co., Ltd (China), (2) China Telecom Beijing Research Institute (China), (3) Huawei (China)
Abstract: We report a real-time demonstration of 16-Tbit/s DWDM system in 420-km un-repeated transmission link, which is a new distance and capacity record of single span transmission system. It shows 48-nm ultra-wide DWDM system by collaboration of extended C-band EDFA, RGU, and distributed Raman amplifier.

10:10 (AM Session) & 20:10 (PM Session)

We2E-5: Record Unrepeatered 400G 16QAM Signal Transmission over 526 km of Terrestrial Ultra-Low Loss Optical Fiber
Korotkov, Nikita (1); Tezadov, Yaroslav (2); Otradnov, Sergey (2); Makovejs, Sergejs (1); Mornatta, Cristiano (3); Festa, Alessandro (3)
(1) Corning (Russian Federation), (1) Corning (USA), (2) IPG IRE-Polus (Russian Federation), (3) IPG Photonics (Italy)
Abstract: We demonstrated a record transmission of 400G 16QAM signal over 526 km of terrestrial ultra-low loss and large effective area fibers. Third-order Raman amplifiers and Remote Optical Pump Amplifiers (ROPA) were used to achieve the best-in-class performance. The total span loss was 86.24 dB.

10:20 (AM Session) & 20:20 (PM Session)

We2E-6: Experimental Assessment of Multi-Dimensional Modulation Formats at High Baudrate for Unrepeatered WDM Systems
Bendimerad, Djalal; Lorences-Riesgo, Abel; Le Gac, Dylan; de Jauregui Ruiz, Ivan Fernandez; Demirtzioglou, Iosif; Martins, Celestino Sanches; Dris, Stefanos; Frignac, Yann; Charlet, Gabriel
Huawei Technologies France (France)
Abstract: We experimentally assess a series of four multi-dimensional modulation formats for 100Gbaud single-span unrepeatered multi-rate applications. We show the variation of maximum acceptable span loss for entropies between 1 and 2b/S/pol, with a granularity of 0.25b/S/pol

 

SC06 - Theory of Optical Communications

 

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Session Tu1F: Nonlinear fiber-optic propagation
Tuesday 08 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Karlsson, Magnus
Chair PM-session: Sadot, Dan

08:30 (AM Session) & 18:30 (PM Session)

Tu1F-4: All-Optical Nonlinear Pre-Compensation of Long-Reach Unrepeatered Systems
Kaminski, Pawel Marcin (1); Sutili, Tiago (2); da Cruz Júnior, José Hélio (2); Simões, Glauco Cesar Crystal Pereira (2); Da Ros, Francesco (1); Yankov, Metodi (1); Hansen, Henrik Enggaard (1); Clausen, Anders Thomas (1); Forchhammer, Søren (1); Oxenløwe, Leif (1); Figueiredo, Rafael Carvalho (2); Galili, Michael (1)
(1) DTU Fotonik, Technical University of Denmark (Denmark), (2) Optical Communications Division, CPQD (Brazil)
Abstract: We numerically demonstrate an all-optical nonlinearity pre-compensation module for state-of-the-art long-reach Raman-amplified unrepeatered links. The compensator design is optimized in terms of propagation symmetry to maximize the performance gains under WDM transmission, achieving 4.0dB and 2.6dB of SNR improvement for 250-km and 350-km links.

08:40 (AM Session) & 18:40 (PM Session)

Tu1F-5: Gain-shaped waterfilling is Quasi-optimal for Constant-pump Flattened-EDFA Submarine Links
Bononi, Alberto (1); Serena, Paolo (1); Antona, Jean-Christophe (2)
(1) University of Parma (Italy), (2) Alcatel Submarine Networks (France)
Abstract: For EDFA-amplified submarine links, we corroborate the results in [1] by analytically deriving an approximate capacity-achieving distribution where power is allocated inversely to the EDFA gain.

 

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Session Tu2F: Advanced tranmission concepts
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Alvarado, Alex
Chair PM-session: Griesser, Helmut

09:30 (AM Session) & 19:30 (PM Session)

Tu2F-1: (Invited) End-to-End Learning in Optical Fiber Communications: Concept and Transceiver Design
Karanov, Boris (1) (2); Bayvel, Polina (1); Schmalen, Laurent (3)
(1) University College London (United Kingdom), (2) Eindhoven University of Technology (The Netherlands), (3) Karlsruhe Institute of Technology (Germany),
Abstract: We implement a complete fiber-optic communication system as an end-to-end computational graph using an artificial neural network (ANN)-based transceiver. We highlight transceivers implemented using feedforward or recurrent ANN, and illustrate their performance by an example.

10:00 (AM Session) & 20:00 (PM Session)

Tu2F-4: (Extended) Logarithmic Perturbation Models in the Weak-Dispersion Regime with Applications to Passive Optical Networks
Oliari, Vinicius (1); Agrell, Erik (2); Alvarado, Alex (1)
(1) Technical University of Eindhoven (The Netherlands), (2) Chalmers University of Technology (Sweden)
Abstract: Three novel analytical models derived using logarithmic perturbation are presented. The best proposed model achieves a gain of 1.5 dB when comparing its normalized square deviation with other models in a passive optical network system.

10:30 (AM Session) & 20:30 (PM Session)

Tu2F-7: On Small Multi-Dimensional Constellations for Nonlinear Optical Fiber Communications
Cho, Junho; Chen, Xi
Nokia Bell Labs (USA)
Abstract: We review three small multi-dimensional constellations with an information rate of 1 bit/dimension or less in a concatenated coded modulation framework and compare the gain and loss of multi-dimensional coding through optical transmission simulations.

 

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Session We1F: Shaping-based communications
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Serena, Paolo
Chair PM-session: Cho, Junho

08:00 (AM Session) & 18:00 (PM Session)

We1F-1: Lattice-based geomtric shaping
Mirani, Ali; Agrell, Erik; Karlsson, Magnus
Chalmers University of Technology (Sweden)
Abstract: Geometrically shaped multidimensional constellations with more than $10^{28}$ points are simulated using fast and low-complexity algorithms without any look-up tables to store the constellation points. At the same symbol error rate, more than 78\% and 114\% reach improvement are demonstrated compared with 4- and 16-QAM, respectively.

08:10 (AM Session) & 18:10 (PM Session)

We1F-2: Nonlinear Interference Analysis of Probabilistic Shaping vs. 4D Geometrically Shaped Formats
Chen, Bin (1); Okonkwo, Chigo (2); Alvarado, Alex (2)
(1) Hefei University of Technology (China), (2) Eindhoven University of Technology (The Netherlands)
Abstract: Performance trade-offs between linear shaping and nonlinear tolerance of the recently introduced 4D orthant-symmetric 128-ary modulation format are investigated. Numerical simulations show 9.3% reach increase with respect to the 7b4D-2A8PSK format and probabilistically-shaped 16QAM with short blocklength.

08:20 (AM Session) & 18:20 (PM Session)

We1F-3: Interplay of Probabilistic Shaping and Carrier Phase Recovery for Nonlinearity Mitigation
Civelli, Stella (1); Forestieri, Enrico (2); Secondini, Marco (2)
(1) Tecip Institute, Scuola Superiore Sant'Anna (Italy), (2) Scuola Superiore Sant'Anna (Italy)
Abstract: The interaction between carrier phase recovery and probabilistic amplitude shaping (PAS) in the nonlinear regime is investigated. We show that, for sufficiently high signal-to-noise ratio, the first provides the same inter-channel nonlinearity mitigation achieved by short block-length PAS.

08:30 (AM Session) & 18:30 (PM Session)

We1F-4: Coded Modulation for Four-Dimensional Signal Constellations with Concatenated Non-Binary Forward Error Correction
Stern, Sebastian (1); Barakatain, Masoud (2); Frey, Felix (3); Pfeiffer, Johannes (1); Fischer, Johannes Karl (3); Fischer, Robert F.H. (1)
(1) Institute of Communications Engineering, Ulm University (Germany), (2) Department of Electrical and Computer Engineering, University of Toronto (Canada), (3) Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (Germany)
Abstract: A concatenated coded-modulation scheme for 4D constellations is proposed that consists of an inner complexity-optimized non-binary LDPC code and an outer zipper code. The related packing, shaping, and coding gains reduce the required SNR by 1 dB over conventional BICM with DP-16QAM.

08:40 (AM Session) & 18:40 (PM Session)

We1F-5: Blind Radius Directed Equalizer with Likelihood-based Selection for Probabilistically Shaped and High Order QAM
Di Rosa, Gabriele; Richter, André
VPIphotonics GmbH (Germany)
Abstract: We propose a novel equalization algorithm for high order and shaped M-QAM. Our blind RDE utilizes conditional filter updates based on the assignment likelihood of amplitude levels. Compared to traditional RDE we demonstrate a convergence rate of >99% for up to 93% higher DGD.

08:50 (AM Session) & 18:50 (PM Session)

We1F-6: Numerical study on the combination of Probabilistic Shaping and Digital Resolution Enhancer for high baud rate optical communications
Abu-Romoh, Mahmood (1); T. Nguyen, Tu (1); Yoffe, Yaron (2); Phillips, Ian (1); Forysiak, Wladek (1)
(1) Aston University (United Kingdom), (2) Ben-Gurion University of the Negev (Israel)
Abstract: We present a numerical study of probabilistic constellation shaping gains in low resolution digital to analogue converters based transceivers, which utilise digital resolution enhancement. A signal to noise ratio gain of 0.75dB for optimized probabilistic shaping factors is achievable.

 

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Session We2F: Long haul transmission
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Yoshida, Masato
Chair PM-session: Antonelli, Cristian

09:30 (AM Session) & 19:30 (PM Session)

We2F-1: (Invited) The Generalized Droop Model for Optical Long-Haul Transmission Systems
Bononi, Alberto (1); Antona, Jean-Christophe (2); Serena, Paolo (1)
(1) University of Parma (Italy), (2) Alcatel Submarine Networks (France)
Abstract: We review the fundamentals of the recently disclosed Generalized Droop model and highlight its use in optimization of long-haul low-SNR space-division multiplexed submarine links.

10:00 (AM Session) & 20:00 (PM Session)

We2F-4: Impact of Sparse Gain Equalization in the Presence of Stimulated Raman Scattering
Lasagni, Chiara; Serena, Paolo; Bononi, Alberto
University of Parma (Italy)
Abstract: We investigate the impact of accumulated stimulated Raman scattering (SRS) on the nonlinear interference (NLI) variance due to sparse gain equalization along the link. We propose simple modifications to analytical models from the literature for reliable NLI estimation in the presence of accumulated SRS.

10:10 (AM Session) & 20:10 (PM Session)

We2F-5: Photon-Efficient Communication Based on BPSK Modulation with Multistage Interferometric Receivers
Banaszek, Konrad; Zwolinski, Wojciech; Jarzyna, Marcin; Kunz, Ludwig; Jachura, Michal
University of Warsaw (Poland)
Abstract: Transmission of BPSK words optically decoded using a cascade of interferometric stages presents an alternative to current modulation standards for photon-starved communication, shifting the bulk of the system complexity to the receiver. Importantly, imperfect interference visibility does not undermine the attainability of high photon efficiency.

 

SC07 – Photonics for RF and Free Space Optics applications

 

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Session Tu1G: Photonics-assisted 5G coverage
Tuesday 08 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Chow, Chi-Wai
Chair PM-session: Cao, Zizheng

08:00 (AM Session) & 18:00 (PM Session)

Tu1G-1: (Invited) Advances on 5G, research directions and role of optical technologies - An industry view
Lombardi, Renato
Huawei (Italy)
Abstract: One important aspect of 5G, compared to previous generations, is the prominent role of a diverse set of usage scenarios with applications above and beyond the traditional high-speed connection. Even though enhanced mobile broadband (eMBB) is still an important use case for mobile operators around the world, emergence of other usage scenarios such as those classified under massive machine type communications (mMTC) and ultra-reliable/low-latency communications

08:30 (AM Session) & 18:30 (PM Session)

Tu1G-4: 5G New Radio Compatible Multicarrier Signals Delivery over an Optical/Millimeter-Wave Analog Radio-over-Fiber Fronthaul Link
Delmade, Amol; Browning, Colm; Barry, Liam
Dublin City University (Ireland)
Abstract: Millimeter-wave carriers with high spectral purity are paramount for carrying kHz level subcarrier spacing multi-carrier signals. This work demonstrates the successful generation of 60.6 GHz OFDM signal, with 61 kHz subcarrier spacing, in an optical heterodyne analog radio-over-fiber system using gain switched laser source.

08:40 (AM Session) & 18:40 (PM Session)

Tu1G-5: A Flexible and Reconfigurable Si3N4 ROADM-enabled 5G mmWave IFoF Fiber Wireless Fronthaul with 60 GHz beamsteering capabilities
Tsakyridis, Apostolos (1); Ruggeri, Eugenio (1); Kalfas, George (1); M.Oldenbeuving, Ruud (2); W.L.Van Dijk, Paul (2); Roeloffzen, Chris (2); Leiba, Yigal (3); Miliou, Amalia (1); Pleros, Nikos (1); Vagionas, Christos (1)
(1) Aristotle University of Thessaloniki (Greece), (2) LIONIX (The Netherlands), (3) Siklu (Israel)
Abstract: A bandwidth-reconfigurable mmWave Fiber Wireless fronthaul bus topology of four 1 Gb/s 16-QAM streams transmitted through two cascaded low-loss Si3N4-ROADM stages and a 60 GHz Phased Array Antenna with 90° steering is experimentally demonstrated the first time for 5G C-RANs.

08:50 (AM Session) & 18:50 (PM Session)

Tu1G-6: Low-Cost and High-Spectral-Efficient Co-Transmission Integrating 28-Gbaud PAM-4/NRZ and 5G-mmW ARoF
Li, Longsheng (1); Zhang, Xiaoling (1); Kong, Deming (1); Jia, Shi (1); Hu, Weisheng (2); Hu, Hao (1)
(1) Technical University of Denmark (Denmark), (2) Shanghai Jiao Tong University (China)
Abstract: By filling the spectral null of 2-bit-DAC-generated 28-Gbaud PAM-4/NRZ with 8×400-MHz 5Gstandardized mmW signal, we demonstrate 25-km digital-analog-integrated co-transmission using a single MZM to efficiently serve PON and mobile fronthaul on a single wavelength in C-band, without employing optical amplifier or cell-side frequency conversion.

09:00 (AM Session) & 19:00 (PM Session)

Tu1G-7: End-to-End Demonstration based on hybrid IFoF and Analogue RoF/RoMMF links for 5G Access/In-Building Network System
Kao, Hsuan-Yun (1); Yasuda, Hiroki (2); Ishimura, Shota (1); Tanaka, Kazuki (1); Aiba, Takamitsu (2); Wakabayashi, Tomohiro (2); Nishimura, Kosuke (1); Kawanishi, Tetsuya (3); Inohara, Ryo (1)
(1) KDDI Research, Inc. (Japan), (2) YAZAKI CORPORATION (Japan), (3) Waseda University (Japan)
Abstract: An end-to-end mobile fronthaul system based on hybrid IFoF and analogue Radio-over-fibre /Radio-over-multi-mode-fibre (RoF/RoMMF) links is demonstrated for the first time. With the capacity of 25.65 Gbps, the transmission link complies the required peak data rate of 5G vision of IMT-2020

 

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Session Tu2G: Indoor Optical Wireless Commuincations
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Chow, Chi-Wai
Chair PM-session: Cao, Zizheng

09:30 (AM Session) & 19:30 (PM Session)

Tu2G-1: (Invited) Control and Data Plane Separation for Interoperable Indoor Wireless Access Connectivity
Wong, Elaine; Edirisinghe, Sampath; Ranaweera, Chathurika; Lim, Christina; Nirmalathas, Ampalavanapillai
University of Melbourne (Australia)
Abstract: The abstract is shown in the comments section. Thank you.

10:00 (AM Session) & 20:00 (PM Session)

Tu2G-4: A wide field of view VLC receiver for smartphones
Riaz, Amna; Collins, Steve
University of Oxford (United Kingdom)
Abstract: The directionality of visible light transceivers is important in the VLC, the random orientation of smartphones that occur when users are moving. which makes these links vulnerable. A fluorescent fibre acting as an optical concentrator is presented with experimental results which show that 1.1 Gbps data rate is possible at a wide FOV of 240 degree

10:10 (AM Session) & 20:10 (PM Session)

Tu2G-5: Luminaire-Free Gigabits per second LiFi Transmission employing WDM-over-POF
Ribeiro Barbio Corrêa, Carina; M. Huijskens, Frans; Tangdiongga, Eduward; Koonen, A.M.J.
Eindhoven University of Technology (The Netherlands)
Abstract: A transmission link comprising wavelength division multiplexing over 1mm core size step-index plastic optical fibre and up to 1.6m free space is demonstrated for indoor optical wireless communication. Throughputs of more than 2 Gbps has been achieved using 2 wavelengths and discrete multitone.

10:20 (AM Session) & 20:20 (PM Session)

Tu2G-6: Novel Broadband OWC Receiver with Large Aperture and Wide Field of View
Koonen, A.M.J.; Mekonnen, K.A.; Huijskens, Frans; Cao, Zizheng; Tangdiongga, Eduward
Eindhoven University of Technology (The Netherlands)
Abstract: We propose and analyse a low-complexity broadband optical wireless receiver based on a novel 2-dimensional matrix of photodiodes yielding a large aperture and wide FoV in an IR beam-steered system. Experimentally more than 1Gbit/s OOK transmission is shown with 10cm IR beams at a FoV=10°.

 

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Session We1G: Satellite communications
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Yi, Xiaoke
Chair PM-session: Oxenløwe, Leif Katsuo

08:00 (AM Session) & 18:00 (PM Session)

We1G-1: (Invited) Optical Feeder Links for Future Very High-Throughput Satellite Systems in B5G Networks
Mata Calvo, Ramon (1); de Cola, Tomaso (1); Poliak, Juraj (1); Macrì, Luca (1); Papa, Arled (2); Ayvasik, Serkut (2); Babaians, Edwin (3); Kellerer, Wolfgang (2)
(1) DLR - German Aerospace Center / Institute of Communications and Navigation (Germany), (2) Chair of Communication Networks, Technical University of Munich (TUM) (Germany), (3) Chair of Media Technology, Technical University of Munich (TUM) (Germany)
Abstract: Optimizing the optical feeder-links is essential in providing broadband connectivity between ground and space. The system architecture is being investigated and experiments are being performed to integrate B5G technologies. Atmospheric turbulence mitigation is being demonstrated to provide a stable feeder-link and maximize the data throughput.

08:30 (AM Session) & 18:30 (PM Session)

We1G-4: Digital Pre-Compensation of Doppler Frequency Shift in Coherent Optical Satellite Communications
Almonacil, Sylvain; Boddeda, Rajiv; Allain, Tituan; Romero Arrieta, Daniel; Bigo, Sébastian
Nokia Bell Labs (France)
Abstract: We propose to compensate the Doppler shift in satellite communications digitally by combining digital pre-emphasis and clipping. Without laser wavelength tuning, we achieve up to 10 GHz compensation at 500 Gbps line rate with less than 0.7 dB additional optical launched power.

08:40 (AM Session) & 18:40 (PM Session)

We1G-5: Capacity Limits of Optical Satellite Communications
Romero Arrieta, Daniel; Boddeda, Rajiv; Almonacil, Sylvain; Allain, Tituan; Bigo, Sébastian
Nokia Bell Labs (France)
Abstract: We evaluate the impact of atmospheric absorption on the WDM channel capacity for ground-satellite optical links. At optimum geostationary satellite longitude over Europe, we maximise the capacity by unequal channel distribution and digital equalization; We compute 10% capacity increase with respect to a uniform distribution.

08:50 (AM Session) & 18:50 (PM Session)

We1G-6: A New Approach to Nonuniform Sampling of Bounded Atmospheric Turbulence Spectra
Krimmer, Jonas; Füllner, Christoph; Randel, Sebastian
Karlsruhe Institute of Technology (Germany)
Abstract: We present a novel approach to sample the spectra describing phase fluctuations affecting lightwaves traversing the turbulent atmosphere. By combining the nonuniform fast Fourier transform (NUFFT) with a sample distribution based on the inverse hyperbolic sine, we observe unmatched levels of computational efficiency.

 

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Session We2G: Free Space Optics
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Ortega, Beatriz
Chair PM-session: Parsons, Nick

09:30 (AM Session) & 19:30 (PM Session)

We2G-1: (Invited) One photon per bit communication for free-space optical links
Kakarla, Ravikiran (1); Schroeder, Jochen (2); Andrekson, Peter A. (3)
(1) Optoelectronic research center, University of Southampton (United Kingdom), (2) Photonics Laboratory, Chalmers University of Technology (Sweden), (3) Chalmers University of Technology (Sweden)
Abstract: We demonstrate a free-space transmission experiment showing bit-er ‘black-box’ sensitivity of 1 photon-per-information-bit (PPB) at a net information rate of 10.5 Gb/s. The system uses a simple modulation format (QPSK) transmitter and near noiseless phase sensitive pre-amplified coherent receiver.

10:00 (AM Session) & 20:00 (PM Session)

We2G-4: (Highly scored) Demonstration of Turbulence Resiliency in a Mode-, Polarization-, and Wavelength-Multiplexed Free-Space Optical Link using Pilot Tones and Optoelectronic Wave Mixing
Zhou, Huibin (1); Song, Hao (1); Zhang, Runzhou (1); Hu, Nanzhe (1); Zou, Kaiheng (1); Song, Haoqian (1); Pang, Kai (1); Su, Xinzhou (1); Liu, Cong (1); Minoofar, Amir (1); Lynn, Brittany (2); Park, Daeyoung (3); Tur, Moshe (4); Willner, Alan (1)
(1) University of Southern California (USA), (2) Naval Information Warfare Center Pacific (USA), (3) Inha University, South Korea, (4) Tel Aviv University (Israel)
Abstract: We experimentally demonstrate the turbulence resiliency in a mode-, polarization, and wavelength- multiplexed free-space optical link using pilot tones and optoelectronic wave mixing. 8 multiplexed channels combined with 2 OAM modes, 2 polarizations, and 2 wavelengths are demonstrated in a 4Gbit/s QPSK link.

10:10 (AM Session) & 20:10 (PM Session)

We2G-5: Full-duplex FSO Communication System utilizing Optical Image Stabilizer and Free-Space Optical Circulator
Bekkali, Abdelmoula; Fujita, Hideo; Hattori, Michikazu
TOYO Electric Corporation (Japan)
Abstract: We developed a novel full-duplex FSO transceiver with optical-image stabilizer (OIS) and free-space-optical circulator. The OIS technology, which is widely used by smartphones cameras, was successfully implemented to expand the transceiver field-of-view (FOV) and maintain laser beam alignment with efficient seamless coupling to fiber core.

10:20 (AM Session) & 20:20 (PM Session)

We2G-6: Up-to 292-Mbps Deep-UV Communication over a Diffuse-Line-of-Sight Link Based on Silicon Photo Multiplier Array
Yoshida, Yuki (1); Kojima, Kazunobu (2); Shiraiwa, Masaki (1); Kanno, Atsushi (1); Hirano, Akira (3); Nagasawa, Yosuke (3); Ippommatsu, Masamichi (3); Yamamoto, Naokatsu (1); Chichibu, Shigefusa (2); Awaji, Yoshinari (1)
(1) National Institute of Information and Communications Technology (NICT) (Japan), (2) Tohoku University (Japan), (3) UV Craftory Co. Ltd. (Japan)
Abstract: Towards a Gbps-class outdoor mobile optical wireless communication (OWC), we experimentally investigate an up-to 292-Mbps diffuse-line-of-sight OWC in the solar-blind band based on an AlGaN-LED and a Silicon photo multiplier array under a typical indoor illumination condition.

10:30 (AM Session) & 20:30 (PM Session)

We2G-7: (Highly scored) 30 GHz Radio over FSO System using High Speed 2D-PDA and Its Optical Path Switching Performance
Umezawa, Toshimasa (1); Pham, Dat (1); Kanno, Atsushi (1); Jitsuno, Kunihisa (2); Yamamoto, Naokatsu (1); Kawanishi, Tetsuya (2)
(1) NICT (Japan), (2) Waseda University (Japan), (2) Waseda Universty (Japan)
Abstract: We present a 30-GHz radio over FSO system using a high speed 2D-PDA, offering high optical alignment robustness and demonstrating 20-Gbps range high data rate wireless transmission. The BER performance under static and dynamic beam switching conditions will be discussed.

 

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Session Th1G: Analogue Radio over Fiber
Thursday 10 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Torfs, Guy
Chair PM-session: Carpintero, Guillermo

08:00 (AM Session) & 18:00 (PM Session)

Th1G-1: (Extended) 60 GHz Resonant Photoreceiver with an Integrated SiGe HBT Amplifier for Low Cost Analog Radio-Over-Fiber Links
Singh, Nishant (1); Van Kerrebrouck, Joris (1); Caillaud, Christophe (2); Demeester, Piet (1); Yin, Xin (1); Torfs, Guy (1)
(1) Ghent University - imec (Belgium), (2) III-V Lab (France)
Abstract: A photoreceiver is presented for remote antennas in the 60GHz band utilizing an amplifier designed to present a matched impedance to a photodiode. It offers 29dB higher gain than a reference photodiode over a 3dB bandwidth of 5.7GHz while consuming 33.6mW. It is demonstrated up to 20Gbps over 5km SSMF at 4Gbaud using QAM32 with 11.5% RMS EVM.

08:30 (AM Session) & 18:30 (PM Session)

Th1G-4: A Novel mmW A-RoF Transmission Scheme Employing Dual-stage Active Demultiplexing of an Optical Frequency Comb
Lakshmijayasimha, Prajwal (1); Tajammul Ahmad, Syed (2); Martin, Eamonn (2); Anandarajah, Prince (2); Kaszubowska-Anandrajah, Aleksandra (3)
(1) Dublin City University (Ireland), (2) School of Electronic Engineering, Dublin City University (Ireland), (3) CONNECT centre, Trinity College Dublin (Ireland)
Abstract: A simple, highly efficient scheme of generating mmW signals, employing an optical frequency comb and a dual-stage active demultiplexer is proposed. We experimentally demonstrate the generation and distribution of 38 GHz 64-QAM UF-OFDM signal over 25 km of fibre, achieving a BER of 1.6 e-4.

08:40 (AM Session) & 18:40 (PM Session)

Th1G-5: SSBI-Free Photonic Armstrong Method for Ultra-Wideband PM Signal Generation
Ishimura, Shota; Kao, Hsuan-Yun; Tanaka, Kazuki; Nishimura, Kosuke; Inohara, Ryo; Tsuritani, Takehiro; Suzuki, Masatoshi
KDDI Research, Inc. (Japan)
Abstract: We propose a novel scheme to generate a wideband PM signal using a photonic Armstrong method, accomplishing both bandwidth expansion and the total elimination of SSBI simultaneously. We experimentally confirm the validity of the concept and demonstrate a 60-GHz-class PM signal generation.

08:50 (AM Session) & 18:50 (PM Session)

Th1G-6: DMT-16QAM photonic-wireless link in W-band enabled by an integrated MLL chip
Jia, Shi; Li, Longsheng; Fu, Yan; Oxenløwe, Leif; Hu, Hao
Technical University of Denmark (Denmark)
Abstract: A lens-free DMT-16QAM W-band photonic-wireless system using an integrated MLL chip and a mixer-based receiver is demonstrated. The on-chip single-light-source MLL generates W-band signals and simplifies the transmitter. The wireless signal's SNR is improved by phase-coherent optical carriers both modulated with data beating in PD.

09:00 (AM Session) & 19:00 (PM Session)

Th1G-7: 64 Gbit/s, 256 QAM Coherently-Linked Optical and Wireless Transmission in 61 GHz Band Using Novel Injection-Locked Carrier Frequency Converter
Kasai, Keisuke; Hirooka, Toshihiko; Yoshida, Masato; Nakazawa, Masataka
Research Organization of Electrical Communication, Tohoku University (Japan)
Abstract: We demonstrate 8 Gbaud-256 QAM coherently-linked optical and wireless transmission for next-generation RAN. An injection-locked carrier frequency converter enabled the precise down-conversion of the optical QAM frequency to 61 GHz. Downlink 64 Gbit/s-data were transmitted over 10 km through single-mode-fibre and over 6 m wirelessly.

 

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Session Th2G: Beam forming and Sub-THz
Thursday 10 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Carpintero, Guillermo
Chair PM-session: Torfs, Guy

09:30 (AM Session) & 19:30 (PM Session)

Th2G-1: 600-GHz Wave Generator Consisting of Arrayed Light Sources in Combination with Arrayed Photomixers
Kim, Younjin; Kato, Kazutoshi
Kyushu University (Japan)
Abstract: We proposed a terahertz wave generator consisting of arrayed light sources and arrayed photomixers. We testified 600-GHz wave beam forming at a prototype of the terahertz wave generator and confirmed a directional gain caused by the array arrangement.

09:40 (AM Session) & 19:40 (PM Session)

Th2G-2: Experimental Evaluation of Remote Beamforming Scheme with Fixed Wavelength Allocation for Radio-over-Fiber Systems
Ito, Kota; Suga, Mizuki; Shirato, Yushi; Kita, Naoki; Onizawa, Takeshi
NTT Corporation (Japan)
Abstract: Experiments are conducted to evaluate a remote beamforming scheme with fixed wavelength allocation for radio-over-fiber systems, which can control the beam direction of base station from the central station. The results confirm that the scheme can realize beamforming and beamscanning, and achieve almost ideal beam patterns.

09:50 (AM Session) & 19:50 (PM Session)

Th2G-3: Radio over Fiber–driven Time Modulated Array Antennas for Efficient Beamforming within In-Building Environments
Giovannini, Andrea (1); Nanni, Jacopo (1); Paolini, Giacomo (1); Perini, Federico (2); Lenzi, Enrico (3); Polleux, Jean-Luc (4); Laheurte, Jean-Marc (4); Masotti, Diego (1); Tartarini, Giovanni (1)
(1) DEI, University of Bologna (Italy), (2) INAF, IRA, Istituto Nazionale di Astrofisica (Italy), (3) Protech S.a.S (Italy), (4) ESYCOM, Université Gustave Eiffel (France)
Abstract: A preliminary proof-of-concept of an innovative system combining the technologies of Radio over Fiber (RoF) and Time Modulated Array (TMA) Antennas is proposed. Through a theoretical and experimental analysis,the straightforward realization of steerable antenna arrays for capillary indoor wireless signal distribution is demonstrated.

10:00 (AM Session) & 20:00 (PM Session)

Th2G-4: Terahertz Heterodyne AND Operation for Physically Encrypted Wireless Communication
Yamauchi, Kenta (1); Kawai, Yusuke (1); Che, Ming (1); Ito, Hiroshi (2); Ishibashi, Tadao (3); Kato, Kazutoshi (4)
(1) Graduate School of Information Science and Electrical Engineering, Kyushu University (Japan), (2) Center for Natural Sciences, Kitasato University (Japan), (3) NTT Electronics Techno Corporation (Japan), (4) Kyushu University (Japan)
Abstract: A physically encrypted wireless communication configuration that deduces ANDed data decrypted from heterodyne detection between two wireless data streams is proposed. The demonstration of heterodyne AND operation was conducted by THz carriers radiated from arrayed UTC-PDs. Experimental results testified the proposed heterodyne AND operation scheme.

10:10 (AM Session) & 20:10 (PM Session)

Th2G-5: Demonstration of 73.15Gbit/s 4096-QAM OFDM D-band Wireless Transmission Employing Probabilistic Shaping and Volterra Nonlinearity Compensation
Zhao, Li; Wang, Kaihui; Zhou, Wen; Kong, Miao; Wang, Yanyi; Wang, Feng; Xiao, Jiangnan; Yu, Jianjun
Fudan University (China)
Abstract: We experimentally demonstrate a transmission of 73.15Gbit/s 4096-QAM OFDM signal at 117GHz over 13.42-m wireless using probabilistic shaping and Volterra nonlinearity compensation.

10:20 (AM Session) & 20:20 (PM Session)

Th2G-6: 132 Gb/s 3×3 Full MIMO Fiber–Wireless Seamless System in W Band Using WDM/PDM RoF Transmission
Pham, Dat (1); Rottenberg, François (2); Kanno, Atsushi (1); Inagaki, Keizo (1); Yamamoto, Naokatsu (1); Kawanishi, Tetsuya (3)
(1) NICT (Japan), (2) Université Catholique de Louvain (Belgium), (3) Waseda University (Japan)
Abstract: We demonstrate the first 3×3 full multiple-input multiple-output fiber–wireless seamless system in the W band. Satisfactory performance is experimentally confirmed for a total capacity of approximately 119 Gb/s and 132 Gb/s using standard and flexible FBMC/OQAM signals, respectively.

10:30 (AM Session) & 20:30 (PM Session)

Th2G-7: Analogue Radio-Over-Fiber Fronthaul with UDWDM-based Delay Dissemination for Photonic-Assisted RF Beam Steering
Milovancev, Dinka; Vokić, Nemanja; Löschenbrand, David; Zemen, Thomas; Schrenk, Bernhard
Austrian Institute of Technology (Austria)
Abstract: We integrate beam steering in a coherent ultra-dense WDM fronthaul to steer the beam of a 1×3 phased-array remote radio head. Deflected OFDM radio signal transmission at a low error vector magnitude of 3.4% is experimentally demonstrated in virtue of low-complexity coherent receivers.

 

SC08 - Core and metro networks

 

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Session Tu1H: SDM and Multiband High capacity systems
Tuesday 08 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Carena, Andrea
Chair PM-session: Layec, Patricia

08:00 (AM Session) & 18:00 (PM Session)

Tu1H-1: (Invited) Petabit class transmission and switching
Luis, Ruben (1); Puttnam, Benjamin J. (1); Rademacher, Georg (1); Eriksson, Tobias A. (2); Hirota, Yusuke (1); Shinada, Satoshi (1); Ross-Adams, Andrew (3); Gross, Simon (3); Withford, Michael (3); Maruyama, Ryo (4); Aikawa, Kazuhiko (4); Awaji, Yoshinari (1); Furukawa, Hideaki (1); Wada, Naoya (1)
(1) National Institute of Information and Communications Technology (Japan), (2) Infinera (Sweden), (3) MQ Photonics Research Center, Macquarie University (Australia), (4) Fujitsu Ltd. (Japan)
Abstract: We evaluate the requirements for future spatial-division multiplexing networks operating at throughput higher than 1 Pb/s and discuss possible solutions to support ultra-high capacity.

08:30 (AM Session) & 18:30 (PM Session)

Tu1H-4: Power Optimization Strategy for Multi-Band Optical Systems
Uzunidis, Dimitris (1); Matrakidis, Chris (1); Stavdas, Alexandros (2); Lord, Andrew (3)
(1) OpenLightComm Ltd (United Kingdom), (2) University of Peloponnese (Greece), (3) British Telecom (United Kingdom)
Abstract: We propose a novel strategy which optimizes the power of all amplification bands in a Multi-Band system concurrently. The proposed method improves the OSNIR performance in S-band of more than 4 dB compared with optimization schemes in the literature.

08:40 (AM Session) & 18:40 (PM Session)

Tu1H-5: Experimental Demonstration of Wavelength-Selective Band/Direction-Switchable Multi-Band OXC Using an Inter-Band All-Optical Wavelength Converter
Kawahara, Hiroki; Nakagawa, Masahiro; Seki, Takeshi; Miyamura, Takashi
NTT Corporation (Japan)
Abstract: We propose a highly-flexible multi-band OXC which effectively utilizes enhanced network resources through multi-band WDM for the first time. We experimentally confirm the feasibility of the newly-proposed C+L-band OXC with wavelength-selective band/direction switching functions.

08:50 (AM Session) & 18:50 (PM Session)

Tu1H-6: S-, C- and L-Band Photonic Integrated Wavelength Selective Switch
Kraemer, Rafael (1); Nakamura, Fumi (2); Tsuda, Hiroyuki (2); Napoli, Antonio (3); Calabretta, Nicola (1)
(1) Eindhoven University of Technology (The Netherlands), (2) Keio University (Japan), (3) Infinera (Germany)
Abstract: A photonic integrated WSS operating on the S-, C- and L-Band is presented with an average extinction-ratio of -20.40 dB. Crosstalk levels were kept below -20 dB for all bands and experimental results on NRZ OOK data indicate error-free operation for up to 35 Gb/s.

 

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Session Tu2H: Dimensioning of Metro and High capacity networks
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Stavdas, Alexandros
Chair PM-session: Xie, Chongjin

09:30 (AM Session) & 19:30 (PM Session)

Tu2H-1: CAPEX Savings Enabled by Point-to-Multipoint Coherent Pluggable Optics Using Digital Subcarrier Multiplexing in Metro Aggregation Networks
Bäck, Johan (1); Wright, Paul (2); Ambrose, John (3); Chase, Aaron (4); Jary, Matt (4); Masoud, Fady (5); Sugden, Neil (3); Wardrop, Gordon (3); Napoli, Antonio (6); Pedro, Joao (7); Iqbal, Md Asif (8); Lord, Andrew (2); Welch, David (4)
(1) Infinera Corp. (Sweden), (2) British Telecom (United Kingdom), (3) Infinera Corp. (United Kingdom), (4) Infinera Corp. (USA), (5) Infinera Corp. (Canada), (6) Infinera (Germany), (7) Infinera (Portugal), (8) British Telecom Laboratories (United Kingdom)
Abstract: Acknowledging the predominantly hubbed traffic profile in the metro, we apply digital subcarrier multiplexing techniques to 400Gb/s coherent pluggable optics, enabling a point-to-multipoint architecture which shows TCO savings of 76% over a five-year period compared to a traditional architecture based on ROADMs and point-to-point transponder

09:40 (AM Session) & 19:40 (PM Session)

Tu2H-2: Cost Model Comparison of ZR/ZR+ Modules Against Traditional WDM Transponders for 400G IP/WDM Core Networks
Wright, Paul; Davey, Russell; Lord, Andrew
British Telecom (United Kingdom)
Abstract: The introduction of ZR/ZR+ optics means that WDM optics can now be integrated into IP routers in a cost-effective manner without reducing IP router port density. We present a model comparing the costs of building a national network with these new modules to traditional transponders.

09:50 (AM Session) & 19:50 (PM Session)

Tu2H-3: When Is Operation Over C+L Bands More Economical than Multifiber for Capacity Upgrade of an Optical Backbone Network?
Jana, Rana Kumar (1); MITRA, ABHIJIT (2); PRADHAN, ANIKET (1); GRATTAN, KRISTOFER (3); SRIVASTAVA, ANAND (1); Mukherjee, Biswanath (4); Lord, Andrew (3)
(1) Indraprastha Institute of Information Technology, New Delhi (IIIT-Delhi) (India), (2) IIIT-Delhi, British Telecom - GRIP, University of California - Davis - USA (India), (3) British Telecom (United Kingdom), (4) University of California, Davis (USA)
Abstract: Network operation over C+L bands compared to multifiber C band is investigated for capacity upgrade of optical backbone networks. C+L bands provide more benefit in larger networks (geographies) even for low fiber lease cost.

10:00 (AM Session) & 20:00 (PM Session)

Tu2H-4: (Invited) Future Metro bottle-neck - how will optical networks cost-effectively deliver anticipated 5G services?
Lord, Andrew (1); Rafel, Albert (1); Pavon, Pablo (2)
(1) British Telecom (United Kingdom), (2) UPCT (Spain)
Abstract: Summarising the EU Metro-Haul project, we assess the impact of end-to-end orchestration for 5G, showing that a static control plane is essential to enable instantiation of myriad applications; but for the most cost-effective management of resources, a responsive, dynamic orchestration will be required.

 

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Session We1H: Network performance monitoring
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Inoue, Takashi
Chair PM-session: Apostolopoulos, Dimitris

08:00 (AM Session) & 18:00 (PM Session)

We1H-1: Direct Nonlinear Noise Monitoring for In-Service Signals in Coherent Systems
Jiang, Zhiping (1); Wang, Simin (2); Tang, Xuefeng (1); Wang, Jianfeng (2); Jin, Dajiang (2); Yang, Hao (2); Si, Minggang (2)
(1) Huawei Technologies Canada (Canada), (2) Huawei Technologies Ltd. (China)
Abstract: Fibre nonlinear noise is directly monitored with the aid of an amplitude modulation pilot tone. For the first time, we demonstrate real-time, direct fibre nonlinear noise monitoring of in-service signals in coherent transceivers, with 0.2dB accuracy and 0.1dB sensitivity.

08:10 (AM Session) & 18:10 (PM Session)

We1H-2: Filter Features Extraction from Optical Spectra
Locatelli, Fabiano (1); Christodoulopoulos, Konstantinos (2); Fabrega, Josep Maria (1); Svaluto Moreolo, Michela (1); Nadal, Laia (1); Spadaro, Salvatore (3)
(1) Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA) (Spain), (2) Nokia Bell Labs Stuttgart (Germany), (3) Universitat Politècnica de Catalunya (Spain)
Abstract: We propose a method to estimate the central frequency and the bandwidth of optical filters, that relies on optical spectra captured with optical channel monitors at ROADM’s ingress port. We demonstrate for both features high estimation accuracy using simulated and experimental data.

08:20 (AM Session) & 18:20 (PM Session)

We1H-3: (Invited) Advanced Data-Analytics-Based Fiber-Longitudinal Monitoring for Optical Transport Networks
Tanimura, Takahito (1); Yoshida, Setsuo (2); Oda, Shoichirou (2); Tajima, Kazuyuki (2); Hoshida, Takeshi (2)
(1) Fujitsu Limited (Currently with Hitachi Ltd.) (Japan), (2) Fujitsu Limited (Japan)
Abstract: We present a novel monitor that estimates distance-wise optical power profile along a transmission-line-longitudinal axis throughout multiple spans by using signal at the link end only. This monitor can localize anomaly point caused by unexpected optical attenuation with sub-km resolution.

08:50 (AM Session) & 18:50 (PM Session)

We1H-6: CNN Based Polarization Rotation Rate Estimation Using TIA Gain Monitoring in Integrated Coherent Receiver
Sato, Masaki; Noguchi, Hidemi; Ishii, Naoto; Le Taillandier de Gabory, Emmanuel
NEC Corporation (Japan)
Abstract: We propose a hardware efficient machine learning based polarization rotation rate estimation scheme by monitoring TIA gain in the standard integrated coherent receiver. The proposed method was experimentally verified with various signal formats and conditions, estimated up to 200 kHz within 2.45 kHz error.

 

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Session We2H: High-capacity network architecture
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Zuo, Tianjian
Chair PM-session: Smets, Rob

09:30 (AM Session) & 19:30 (PM Session)

We2H-1: (Invited) Benefits of Hierarchical Spatial Bypassing and Spectral Grooming in Spatial Channel Networks
Jinno, Masahiko
Kagawa university (Japan)
Abstract: We show that hierarchical spatial bypassing and spectral grooming are beneficial in the SDM era in terms of total node-cost reduction while maintaining a reasonably high spectral efficiency and optical reach extension for optical signals that spatially bypass the overlying WDM layer.

10:00 (AM Session) & 20:00 (PM Session)

We2H-4: Virtually Imaged Phase Array (VIPA)-Based Wavelength Selective Switch with High Spectral Resolution
Chen, Haoshuo; Fontaine, Nicolas K.; Mazur, Mikael; Ryf, Roland; Neilson, David T.
Nokia Bell Labs (USA)
Abstract: We present a 10-port VIPA-based WSS with 3-GHz spectral resolution. A new attenuation scheme through destructively interfering different diffraction orders from the VIPA is proposed and experimentally demonstrated.

10:10 (AM Session) & 20:10 (PM Session)

We2H-5: Demonstration of Any-Core-Access Non-Directional Spatial Cross-Connects Based on Core Selective Switch with and without Core-Contention Constraint
Kodama, Takahiro; Ishikawa, Tsubasa; Suzuki, Daiki; Jinno, Masahiko
Kagawa University (Japan)
Abstract: We demonstrate any-core-access (AC) and non-directional (ND) spatial cross-connects (SXCs) employing a core selective switch and core selector for spatial channel networks. In addition to AC and ND characteristics, a core-contention-less feature is achieved by introducing a newly developed core/port selector into the SXC design.

10:20 (AM Session) & 20:20 (PM Session)

We2H-6: Mode-group division multiplexing for provisioning in SDM networks
Sambo, Nicola (1); Martelli, Paolo (2); Parolari, Paola (2); Gatto, Alberto (2); Castoldi, Piero (1); Boffi, Pierpaolo (2)
(1) Scuola Superiore Sant'Anna (Italy), (2) Politecnico di Milano (Italy)
Abstract: We introduce the concept of mode-group division multiplexing (MGDM) in SDM-network provisioning. Modes belonging to different groups follow different paths in the network with simplified MIMO detection for the modes within the same group. Simulations show high throughput increase while limiting the complexity of the nodes.

 

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Session Th1H: Software and AI based techniques in core networks
Thursday 10 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Morita, Itsuro
Chair PM-session: Popov, Sergei

08:00 (AM Session) & 18:00 (PM Session)

Th1H-1: (Extended) Optimizing Gain Shaping Filters with Neural Networks for Maximum Cable Capacity under Electrical Power Constraints
Cho, Junho (1); Raybon, Gregory (1); Burrows, Ellsworth (1); Antona, Jean-Christophe (2); Fontaine, Nicolas K. (1); Ryf, Roland (1); Chen, Haoshuo (1); Chandrasekhar, Sethumadhavan (1); Sula, Erixhen (3); Olsson, Samuel (4); Grubb, Steve (5); Winzer, Peter (1)
(1) Nokia Bell Labs (USA), (2) Alcatel Submarine Networks (France), (3) EPFL (Switzerland), (4) Nokia (USA), (5) Facebook (USA)
Abstract: We experimentally demonstrate capacity gains of up to 23% under electrical supply power constraints in a long-haul optical fiber cable by optimizing the gain shaping filters using neural networks.

08:30 (AM Session) & 18:30 (PM Session)

Th1H-4: Softwarized Optical Transport QoT in Production OpticalNetwork: a Brownfield Validation
Curri, Vittorio (1); Ferrari, Alessio (1); Balasubramanian, Karthikeyan (2); Filer, Mark (2); Kundrat, Jan (3); Yin, Yawei (2); Grammel, Gert (4); Galimberti, Gabriele (5); Le Rouzic, Esther (6)
(1) Politecnico di Torino (Italy), (2) Microsoft (USA), (3) CESNET (Czech Republic), (4) Juniper Networks (Germany), (5) Cisco Photonics (Italy), (6) Orange Labs (France)
Abstract: We compare measured QoT on production network to GNPy predictions, showing an ex-cellent accuracy for 40 channels on two paths. Transmission exceeds 2000 km on mixed-fiber hybridamplified links. Non-conservative prediction is observed only in 23% of cases and the inaccuracy islimited to 0.3 dB.

08:40 (AM Session) & 18:40 (PM Session)

Th1H-5: (Highly scored) Field Trial of Multi-Layer Slicing Over Disaggregated Optical Networks Enabling End-to-End Crowdsourced Video Streaming
Muqaddas, Abubakar Siddique (1); Stange Tessinari, Rodrigo (1); González de Dios, Oscar (2); Hugues-Salas, Emilio (1); Casellas, Ramon (3); Luque, Lourdes (2); Channegowda, Mayur (4); Giorgetti, Alessio (5); Sgambelluri, Andrea (6); Cugini, Filippo (6); Moreno Muro, Francisco Javier (7); Garrich, Miquel (7); Pavon, Pablo (8); Morro, Roberto (9); Farrow, Kristan (10); Lord, Andrew (11); Nejabati, Reza (1); Simeonidou, Dimitra (12)
(1) University of Bristol (United Kingdom), (2) Telefonica Global CTO (Spain), (3) CTTC (Spain), (4) Zeetta Networks (United Kingdom), (5) CNIT/CNR-IEIIT (Italy), (6) CNIT (Italy), (7) Universidad Politécnica de Cartagena (Spain), (8) UPCT (Spain), (9) TIM (Italy), (10) British Telecommunications Ltd. (United Kingdom), (11) British Telecom (United Kingdom), (12) HPN group, University of Bristol (United Kingdom)
Abstract: We present a field trial of NFV Orchestration over multi-layer packet and disaggregated optical network testbed to demonstrate crowdsourced video streaming use case. We show the average service creation time is under 5 minutes, which meets the KPI as defined by 5G PPP.

 

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Session Th2H: Novel functions for optical core networks and subsystems
Thursday 10 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Lim, Charles
Chair PM-session: Schrenk, Bernhard

09:30 (AM Session) & 19:30 (PM Session)

Th2H-1: Field Trial of Distributed Fiber Sensor Network Using Operational Telecom Faber Cables as Sensing Media
Wellbrock, Glenn (1); Xia, Tiejun (1); Huang, Ming-Fang (2); Salemi, Milad (2); Li, Yaowen (2); Ji, Philip (2); Ozharar, Sarper (2); Chen, Yuheng (2); Ding, Yangming (2); Tian, Yue (2); Wang, Ting (2); Aono, Yoshiaki (3)
(1) Verizon (USA), (2) NEC Laboratories America (USA), (3) NEC Corporation (Japan)
Abstract: We demonstrate fiber optic sensing systems in a distributed fiber sensor network built on existing telecom infrastructure to detect temperature, acoustic effects, vehicle traffic, etc. Measurements are also demonstrated with different network topologies and simultaneously sensing four fiber routes with one system.

09:40 (AM Session) & 19:40 (PM Session)

Th2H-2: Sub-Hertz Spectral Analysis of Polarization of Light in a Transcontinental Submarine Cable
Cantono, Mattia (1); Kamalov, Valey (1); Vusirikala, Vijay (1); Salsi, Massimiliano (1); Newland, Matthew (1); Zhan, Zhongwen (2)
(1) Google (USA), (2) Caltech (USA)
Abstract: We report on a field-trial over the Curie cable connecting USA to Chile. We detected environmental changes through measurements of polarization of light. Seismic waves stemming from moderate-size earthquakes caused perturbations in the 0.5-3Hz range, suggesting that transcontinental cables may be used to detect earthquakes.

09:50 (AM Session) & 19:50 (PM Session)

Th2H-3: Investigation of fiber parameters for subsea systems with terrestrial backhaul
Makovejs, Sergejs (1); Ivanov, Viacheslav (2); Downie, John D. (3)
(1) Corning (United Kingdom), (2) Corning (Russian Federation), (3) Corning Incorporated (USA)
Abstract: The choice of terrestrial fiber is found to have a significant impact on transmission performance. The SNR advantage enabled by newer, ultra-low-loss fibers compared to legacy G.655 fibers is determined to be as high as 4.5 dB, although substantial transmission scenario dependent variabilities are observed

10:00 (AM Session) & 20:00 (PM Session)

Th2H-4: 40 μm Spatial Resolution Optical Frequency Domain Reflectometry at 3 km Based on Relative Distance Measurement to Local Delay Fibre
Okamoto, Tatsuya (1); Iida, Daisuke (1); Oshida, Hiroyuki (2)
(1) NTT Corporation (Japan), (2) NTT (Japan)
Abstract: We demonstrate 40 μm spatial resolution over a few kilometres by optical frequency domain reflectometry (OFDR). The measurement setup overcomes short distance measurement drawback and interrogates distant locations with high resolution. Application of an optical splitter in long-range high-resolution reflectometry is also investigated.

10:10 (AM Session) & 20:10 (PM Session)

Th2H-5: True Random Number Generation in an Optical I/Q Modulator
Vokić, Nemanja; Milovancev, Dinka; Pacher, Christoph; Hübel, Hannes; Schrenk, Bernhard
Austrian Institute of Technology (Austria)
Abstract: We re-use a polarization-multiplexed I/Q modulator to acquire the quantum randomness of its seed laser light for the purpose of quantum random number generation. We obtain 9×104 256-bit AES keys/second after randomness extraction. Time-interleaved random number generation is demonstrated for PM-QPSK transmission.

 

SC09 – Access, Indoor and Data Center and Optical Networks

 

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Session Tu1J: Passive optical networks I
Tuesday 08 December 2020     08:00 - 09:20  (AM Session)    &    18:00 - 19:20  (PM Session)
Chair AM-session: Monteiro, Paulo
Chair PM-session: Pachnicke, Stephan

08:00 (AM Session) & 18:00 (PM Session)

Tu1J-1: (Invited) Intelligent design of optical networks: which topology features help maximise throughput in the nonlinear regime?
Bayvel, Polina; Luo, Ruijie; Matzner, Robin; Semrau, Daniel; Zervas, Georgios
University College London (United Kingdom)
Abstract: The overarching goal in intelligent network design is to deliver capacity when and where it is needed. The key to this is to understand which network topology characteristics impact the achievable network throughput. This is explored through the use of a new generative network model, taking into account physical network characteristics.

08:30 (AM Session) & 18:30 (PM Session)

Tu1J-4: After FEC Performance of 50G PON with Deep Neural Network Equalization
Mahadevan, Amitkumar; Houtsma, Vincent; Kaneda, Noriaki; Van Veen, Doutje
Nokia Bell Labs (USA)
Abstract: Performance of Deep Neural Network receiver equalization is investigated after LDPC FEC. It is shown that DNN equalization results in a lower level of error clustering and higher performing equalization relative to more traditional equalization for bandwidth-limited and dispersion-limited channels for 50G PON.

08:40 (AM Session) & 18:40 (PM Session)

Tu1J-5: Experimental Demonstration of Lloyd-Max Algorithm to Quantization Noise Reduction on a Power–Domain Non-Orthogonal Multiple Access based Coherent PON
Suzuoki, Kosuke (1); Hisano, Daisuke (1); Shibita, Sho (1); Maruta, Kazuki (2); Maruta, Akihiro (1)
(1) Osaka University (Japan), (2) Tokyo Institute of Technology (Japan)
Abstract: This paper proposes the application of nonlinear quantization to a power-domain non-orthogonal multiple access (PD-NOMA-) passive optical network (PON) scheme. Experimental demonstration results indicate a gain of up to approximately 5 dB at a power ratio of 10 between two optical network units.

08:50 (AM Session) & 18:50 (PM Session)

Tu1J-6: Probabilistic and Geometric Shaping for Next-Generation 100G Flexible PON
Zhang, Rui (1); Kaneda, Noriaki (2); Lefevre, Yannick (3); Mahadevan, Amitkumar (2); Van Veen, Doutje (2); Houtsma, Vincent (2)
(1) Georgia Institute of Technology (USA), (2) Nokia Bell labs (USA), (3) Nokia Bell labs (Belgium)
Abstract: We investigate probabilistic shaping (PS) and geometric shaping (GS) for next-generation flexible passive optical network (PON) systems. Our proposed scheme introduces flexible data rate tuning with up to 1.1-dB sensitivity improvement, while GS can effectively mitigate the penalty brought by combination with forward error correction (FEC).

09:00 (AM Session) & 19:00 (PM Session)

Tu1J-7: Multi-Rate 25/12.5/10-Gb/s Burst-Mode Upstream Transmission Based on a 10G Burst-Mode ROSA with Digital Equalization Achieving 20dB Dynamic Range and sub-100ns Recovery Time
Cheng, Ning (1); Shen, Andy (1); Luo, Yuanqiu (1); Zhang, Xu (2); Cheng, Kevin (2); Liu, Xiang (1)
(1) Futurewei Technologies (USA), (2) Macom (USA)
Abstract: We experimentally demonstrate multi-rate burst-mode transmission at 25, 12.5 and 10Gb/s using a 10GHz-class burst-mode receiver optical sub-assembly (ROSA), respectively achieving receiver sensitivities of -27.7, -31, and -32.1dBm after 20-km SSMF transmission at 1E-2 BER, all with 20-dB dynamic range and 92-ns burst recovery time.

09:10 (AM Session) & 19:10 (PM Session)

Tu1J-8: Fresnel Reflection Analysis for Optical Fibre Identification Employing with Three-Wavelength OTDR
Iida, Hiroyuki
NTT Corporation (Japan)
Abstract: We propose a fibre identification method based on temporary optical coupler and three-wavelength optical time domain reflectometry. We show that our technique can identify fibre termination states by analysing Fresnel reflection at three wavelength.

 

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Session Tu2J: Passive optical networks II
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Yoshida, Tomoaki
Chair PM-session: Tran, Karl

10:00 (AM Session) & 20:00 (PM Session)

Tu2J-4: A Versatile NN-Equalization for 50Gbps TDM PON Burst Uplink
Ye, Chenhui; Hu, Xiaofeng; Zhang, Dongxu; Zhang, Kaibin
Nokia Bell Labs (China)
Abstract: To solve signal equalizer’s vulnerability due to ONU uplink channel diversity in TDM PONs, we discovered that having a ONU-distinguisher Sub-NN as a steerer can effectively enhance the Main-NN’s equalization resilience. We showcased such a commonly configured resilient NN serving 50Gb/s bursts from 6 ONUs.

10:10 (AM Session) & 20:10 (PM Session)

Tu2J-5: (Highly scored) First Demonstration of an E2 Class Downstream Link for 50Gb/s PON at 1342nm
Rosales, Ricardo (1); Cano, Ivan (1); Nesset, Derek (1); Ye, Zhicheng (1); Brenot, Romain (1); Dubrovina, Natalia (2); Durán-Valdeiglesias, Elena (2); Debrégeas, Hélène (2); Carrara, David (2); Lelarge, François (2)
(1) Huawei Technologies (France), (1) Huawei Technologies (Germany), (2) Almae Technologies (France)
Abstract: A 1342nm EML with an external SOA has enabled the 20km, 50Gb/s downstream link for ITU T, 50G-PON to be demonstrated for the first time. Using a 25G-class receiver and real-time equalisation, an OMA sensitivity of -24dBm and a link budget of 35.6dB were measured.

10:20 (AM Session) & 20:20 (PM Session)

Tu2J-6: DSP for 50G/100G Hybrid Modulated TDM-PON
Kaneda, Noriaki; Van Veen, Doutje; Mahadevan, Amitkumar; Houtsma, Vincent
Nokia Bell labs (USA)
Abstract: DSP techniques are presented for hybrid modulated TDM-PON. FFE/DFE and various CDRs are tested with measured 50G/100G NRZ/PAM4 hybrid modulated data with 25G commercial devices. The measured data are further processed offline for the worst-case ISI to analyze DSP tolerance to chirp and dispersion effect.

10:30 (AM Session) & 20:30 (PM Session)

Tu2J-7: 50Gb/s TDM PON Digital Signal Processing Challenges: Mining current G-PON Field Data to Assist Higher Speed PON
Simon, Gael (1); Saliou, Fabienne (2); Chanclou, Philippe (1); Anet Neto, Luiz (1); Hallak Elwan, Hamza (2)
(1) Orange (France), (2) Orange Labs (France)
Abstract: ITU-T’s HS-PON will be the first PON generation to involve digital signal processing. We propose in this paper to beneficit from the G-PON abundant field data related to the optical transmission channel in order to help meeting HS-PON challenges.

 

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Session We1J: Optical Access Networks and 5G I
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Nirmalathas, Thas
Chair PM-session: Garcia, Carmen Vazquez

08:00 (AM Session) & 18:00 (PM Session)

We1J-1: (Invited) New approaches in optical access networks to increase network flexibility and achieve 5G targets: an operator’s view
Montalvo, Julio; Torrijos, José Alfonso; Cortés, Daniel
Telefónica (Spain)
Abstract: The telecom network ecosystem is currently facing unprecedented challenges driven by new consumer habits in digitalization and 5G mobile communications. In this paper, multi-PON technology and open access for higher speed PON evolution and virtualization are described and discussed from a network operator perspective.

08:30 (AM Session) & 18:30 (PM Session)

We1J-4: Fronthaul Timing Imbalance Impact on User Equipment Positioning in 4G and 5G
Chanclou, Philippe (1); Saliou, Fabienne (2); Simon, Gael (1); Anet Neto, Luiz (1)
(1) Orange (France), (2) Orange Labs (France)
Abstract: Time difference measurement by RAN is one of the trilateration based UE’s positioning techniques. We propose a discussion about the impact of optical fronthaul timing on the positioning performance. Experimental measurements for several wavelength division multiplexing fronthaul implementation are presented with a focus on latency.

08:40 (AM Session) & 18:40 (PM Session)

We1J-5: (Extended) Europe’s First 5G-Ready Railway Trial Utilizing Integrated Optical Passive WDM Access and Broadband Millimeter-Wave to Deliver Multi-Gbit/s Seamless Connectivity
Zou, Jim (1); Legg, Peter (2); Santiago, Romeo (3); Bruschi, Valerio (4); Graham, Richard (2); Pontarelli, Salvatore (4); Belocchi, Giacomo (4); Petrucci, Luca (4); Ciria, Paula (5); Terés, Carles (5); Agusti, Juan (3); Alfageme, Manuel (3)
(1) ADVA Optical Networking SE (Germany), (2) Blu Wireless Technology Ltd. (United Kingdom), (3) COMSA Corporación (Spain), (4) CNIT (Italy), (5) Ferrocarrils de la Generalitat de Catalunya (Spain)
Abstract: We successfully carried out Europe’s first 5G-ready railway trial in an operational environment by combining a passive wavelength-agnostic WDM for optical transport and 60 GHz millimeter-wave for wireless connectivity. The trial achieved multi-Gbit/s seamless connectivity from track-side access points to a fast-moving train.

 

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Session We2J: Optical Access Networks and 5G II
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Chanclou, Philippe
Chair PM-session: Veisllari, Raimena

09:30 (AM Session) & 19:30 (PM Session)

We2J-1: (Invited) 5G & Optics in 2020 – Where are we now? What did we learn?
Saliou, Fabienne (1); Anet Neto, Luiz (2); Simon, Gael (2); Nogueira Sampaio, Flavio (2); El Ankouri, Anas (2); Wang, Minqi (2); Chanclou, Philippe (2)
(1) Orange Labs (France), (2) Orange (France)
Abstract: Optical networks requirements and solutions for 5G transport are discussed. Evolution of Point to Point, TDM PONs, and WDM networks are presented as candidates for fronthaul and mid or backhaul equipment.

10:00 (AM Session) & 20:00 (PM Session)

We2J-4: Demonstration of Indoor 5G Fronthaul over Legacy Multimode Fiber Enabled by Real-time Analog-to-digital Compression (ADX)
Zhu, Paikun (1); Yoshida, Yuki (2); Kanno, Atsushi (2); Yamamoto, Naokatsu (2); Kitayama, Ken-ichi (1)
(1) The Graduate School for the Creation of New Photonics Industries (GPI) (Japan), (2) National Institute of Information and Communications Technology (NICT) (Japan)
Abstract: An ADX-RoMMF scheme is proposed and experimentally demonstrated for high-fidelity, cost-effective indoor 5G-and-beyond access. Real-time fronthauling of 16-channel MIMO, 5G NR-bandwidth 1024QAM signals verify more than 4-fold MMF reach extension compared with conventional scheme, while maintaining 500ns one-way ADX latency.

10:10 (AM Session) & 20:10 (PM Session)

We2J-5: Mobile Xhaul Traffic Modelling for High-Speed TDM-PON
Bidkar, Sarvesh (1); Dom, Pascal (2); Bonk, Rene (1); Pfeiffer, Thomas (1)
(1) Nokia Bell Labs (Germany), (2) Nokia (Belgium)
Abstract: We provide an analysis of mobile transport capacity requirements for 5G cellular networks based on system level radio simulations. We propose high-speed TDM-PON as transport technology for small cells and validate efficient aggregation in the C-RAN architecture, especially when aggregating latency-sensitive and latency-tolerant transport.

10:20 (AM Session) & 20:20 (PM Session)

We2J-6: Packet Delay Variation Correction for Time Sensitive Networking with Frame Preemption
Sasu, Silviu Adrian; Autenrieth, Achim; Zou, Jim; Elbers, Jörg-Peter
ADVA (Germany)
Abstract: We report a method for correcting packet delay variation (PDV) of high priority express traffic due to frame preemption. Zero PDV with low additional deterministic delay is achieved for high priority express traffic, improving synchronization in time sensitive networks.

10:30 (AM Session) & 20:30 (PM Session)

We2J-7: A Joint Wireless-Optical Front-haul Solution for Multi-user Massive MIMO 5G RAN
Le, Son (1); Wesemann, Stefan (2); Dischler, Roman (2); Venkatesan, Sivarama (1)
(1) Nokia Bell Labs (USA), (2) Nokia Bell Labs (Germany)
Abstract: We demonstrate a high capacity IF-over-fiber mobile fronthaul solution for multi-user massive MIMO 5G RAN. Using this scheme, a record aggregated radio bandwidth of 25.6 GHz was transmitted on a single optical wavelength over 40 km without fiber chromatic dispersion compensation

 

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Session Th1J: Optical Networks for DataCenters
Thursday 10 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Yoshima, Satoshi
Chair PM-session: Parmigiani, Francesca

08:00 (AM Session) & 18:00 (PM Session)

Th1J-1: Demonstration of 4.3 Pbps Optical Circuit Switching for Intra-Datacentre Networks Based on Spatial Super-Channels
Honda, Eiji (1); Mori, Yojiro (1); Hasegawa, Hiroshi (1); Sato, Ken-ichi (2)
(1) Nagoya University (Japan), (2) National Institute of Advanced Industrial Science and Technology (Japan)
Abstract: We verify the feasibility of the optical circuit switch architecture for intra-datacentre networks based on spatial super-channels using DP-QPSK, DP-8QAM, and DP-16QAM signals. Simulations clarify the maximum throughput attainable with each modulation format. Experiments demonstrate a switch throughput of 4.3 Pbps.

08:10 (AM Session) & 18:10 (PM Session)

Th1J-2: Large-Scale and Fast Optical Circuit Switch for Coherent Detection Using Tunable Local Oscillators Formed with Wavelength Bank and Widely-Tunable Silicon Ring Filters
Matsumoto, Ryosuke (1); Konoike, Ryotaro (1); Matsuura, Hiroyuki (1); Suzuki, Keijiro (1); Inoue, Takashi (1); Mori, Yojiro (2); Ikeda, Kazuhiro (1); Namiki, Shu (1); Sato, Ken-ichi (1)
(1) National Institute of Advanced Industrial Science and Technology (AIST) (Japan), (2) Nagoya University (Japan)
Abstract: We demonstrate a 1,024 x 1,024 wavelength-routing optical switch with switching time under 18μs for 256-Gb/s DP-QPSK signals. Wavelength selection at the receivers is achieved by fast widely-tunable (22nm) local oscillators formed using a wavelength bank and newly fabricated silicon ring filters having 5.3-dB fibre-to-fibre insertion loss.

08:20 (AM Session) & 18:20 (PM Session)

Th1J-3: End-to-end optical packet switching with burst-mode reception at 25 Gbs through a 1024-port 25.6 Tbs capacity Hipoλaos Optical Packet Switch
Tsakyridis, Apostolos (1); Terzenidis, Nikos (1); Giamougiannis, George (1); Van Kerrebrouck, Joris (2); Verbeke, Marijin (2); Torfs, Guy (2); Moralis-Pegios, Miltiadis (1); Pleros, Nikos (1)
(1) Aristotle University of Thessaloniki (Greece), (2) Ghent University - imec (Belgium)
Abstract: We demonstrate end-to-end 25Gb/s true optical packet switching featuring burst-mode reception with

08:30 (AM Session) & 18:30 (PM Session)

Th1J-4: Experimental Demonstration of Optical Polling Flow Control for Contention Resolution in Optical Data Center Networks
Xue, Xuwei; Pan, Bitao; Yan, Fulong; Prifti, Kristif; Guo, Xiaotao; Kraemer, Rafael; Zhang, Shaojuan; Calabretta, Nicola
Eindhoven University of Technology (The Netherlands)
Abstract: A novel Optical Polling Flow Control technique for packet-contention resolution in optical DCNs is experimentally assessed. By flexibly reducing the packet-retransmission and HOL blocking to decrease the latency and packet-loss, the proposed technique achieves 6.5E-3 packet-loss and 7.7 µs deterministic latency at 0.6 traffic load.

08:40 (AM Session) & 18:40 (PM Session)

Th1J-5: Experimental Assessment of a Novel Optical Wireless Data Center Network Architecture
Zhang, Shaojuan; Kraemer, Rafael; Pan, Bitao; Xue, Xuwei; Prifti, Kristif; Yan, Fulong; Guo, Xiaotao; Tangdiongga, Eduward; Calabretta, Nicola
Eindhoven University of Technology (The Netherlands)
Abstract: We propose a novel optical wireless data center network based on passive diffractive optics and fast tunable transmitters. Transmission performance of the proposed network with 8×8 racks is assessed with 20-Gb/s NRZ-OOK. Results show a maximum power penalty of 1dB.

08:50 (AM Session) & 18:50 (PM Session)

Th1J-6: Demonstration of Low-Latency ETH-switched DataCenter and 5G Fronthaul Networks Using the 1024-port Hipoλaos Optical Packet Switch
Giamougiannis, George; Tsakyridis, Apostolos; Terzenidis, Nikos; Spasopoulos, Dimosthenis; Vagionas, Christos; Pleros, Nikos
Aristotle University of Thessaloniki (Greece)
Abstract: We experimentally evaluate the performance of a 1024-port Hipoλaos OPS with Ethernet traffic in real-world DC and 5G fronthaul testbeds, successfully demonstrating video transmission and iperf communication through low-latency optical switching at 10Gb/s per port.

09:00 (AM Session) & 19:00 (PM Session)

Th1J-7: 1.6Tb/s Transmission Feasibility Employing IM/DD for Datacentre Networks
Rahman, Talha (1); Hossain, Md Sabbir-Bin (2); Stojanovic, Nebojsa (2); Calabro, Stefano (2); Wei, Jinlong (2); Xie, Changsong (2); Kuschnerov, Maxim (3)
(1) Huawei Technologies German Research Center (Germany), (2) Huawei Technologies Duesseldorf GmbH (Germany), (3) Huawei Munich Research Center (Germany)
Abstract: We demonstrate the feasibility of an aggregate data-rate of 1.6Tb/s using 200Gb/s per lane. Eight O-band wavelengths carrying 112GBd PAM4 are employed to demonstrate transmission over 2km of SSMF at the HD-FEC threshold of 1.75×10-3

 

SC10 - Architecture, Control and Management of optical networks

 

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Session Mo1K: Machine Learning for Optical Networks (I)
Monday 07 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Nejabati, Reza
Chair PM-session: Bauschert, Thomas

08:00 (AM Session) & 18:00 (PM Session)

Mo1K-1: DeepCMS3: A Deep Reinforcement Learning Framework for Core, Mode and Spectrum Sequential Scheduling over Optical Transport Network
Wang, Cen; Yoshikane, Noboru; Balasis, Filippos; Tsuritani, Takehiro
KDDI Research, Inc. (Japan)
Abstract: This paper proposes a deep reinforcement learning based framework for core, mode and spectrum resource sequential scheduling (CMS3), namely the DeepCMS3. Compared to the previous CMS3 algorithm, the DeepCMS3 can achieve higher resource utilization and lower blocking rate.

08:10 (AM Session) & 18:10 (PM Session)

Mo1K-2: A Reinforcement Learning Framework for Parameter Optimization in Elastic Optical Networks
Weixer, Rebekka (1); Kühl, Sebastian (1); Morais, Rui Manuel (2); Spinnler, Bernhard (3); Schairer, Wolfgang (3); Sommerkorn-Krombholz, Bernd (4); Pachnicke, Stephan (1)
(1) Kiel University, Chair of Communications (Germany), (2) Infinera Portugal (Portugal), (3) Infinera (Germany), (4) Infinera Germany (Germany)
Abstract: We present a reinforcement learning (RL) framework for maximizing the total capacity of a 51-channel transmission system, which runs magnitudes faster than a genetic algorithm (GA) based optimization. The generalization capabilities and performance of the RL framework are compared to results obtained with a GA.

08:20 (AM Session) & 18:20 (PM Session)

Mo1K-3: A Meta-learning-assisted Training Framework for AI Deployment in Optical Networks
Liu, Xiaomin; Lun, Huazhi; Fu, Mengfan; Qiu, Qizhi; Yi, Lilin; Hu, Weisheng; Zhuge, Qunbi
Shanghai Jiao Tong University (China)
Abstract: A meta-learning-assisted training framework is proposed to improve the robustness and adaptation ability of the machine-learning-based applications deployed to practical optical networks. In simulations, applications trained by this framework can outperform the traditionally-trained one in systems with various parameter uncertainties.

08:30 (AM Session) & 18:30 (PM Session)

Mo1K-4: Reinforcement Learning -based Autonomous Multilayer Network Operation
Barzegar, Sima; Ruiz, Marc; Velasco, Luis
Universitat Politecnica de Catalunya (Spain)
Abstract: We propose an Intent-Based Networking solution based on Reinforcement Learning (RL). RL-based intents with specific operational objectives and coordinated operation between network layers are developed. Results show service assurance with automatic adaptation to changing traffic.

08:40 (AM Session) & 18:40 (PM Session)

Mo1K-5: Network Performance Optimization with Real Time Traffic Prediction in Data Center Network
Yan, Fulong; Liu, Shiwei; Calabretta, Nicola
Eindhoven University of Technology (The Netherlands)
Abstract: We demonstrate the performance optimization of a data center network based on recurrent highway network (RHN) traffic prediction model. The RHN model achieves the lowest MSE of 0.014 and empowers the network reconfiguration via Ryu controller and SDN agents to demonstrate real-time system performance optimization.

08:50 (AM Session) & 18:50 (PM Session)

Mo1K-6: Supporting Beyond 5G Applications by Coordinating AI-based Intent Operation. An Example for Multilayer Metro Networks
Tabatabaeimehr, Fatemehsadat; Ruiz, Marc; Velasco, Luis
Universitat Politècnica de Catalunya (Spain)
Abstract: Intent-based Networking (IBN) promises facilitating autonomous decision-making for service assurance. In this paper, we extend IBN by coordinating AI-based intents targeting at supporting beyond 5G services, like immersive and Industry 4.0 applications, on metro infrastructures.

 

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Session Mo2K: Machine Learning for Optical Networks (II)
Monday 07 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Bigo, Sebastien
Chair PM-session: Simsarian, Jesse

09:30 (AM Session) & 19:30 (PM Session)

Mo2K-1: Transfer Learning across Different Lightpaths for Failure-Cause Identification in Optical Networks
Musumeci, Francesco (1); Venkata, Virajit G. (1); Hirota, Yusuke (2); Awaji, Yoshinari (2); Xu, Sugang (2); Shiraiwa, Masaki (2); Mukherjee, Biswanath (3); Tornatore, Massimo (1)
(1) Politecnico di Milano (Italy), (2) National Institute of Information and Communications Technology (Japan), (3) University of California, Davis (USA)
Abstract: We perform transfer learning across different lightpaths for failure-cause identification using OSNR traces collected over NICT’s Sendai optical-network testbed. Results suggest that limited additional data on the target lightpath allow to achieve satisfactory accuracy.

09:40 (AM Session) & 19:40 (PM Session)

Mo2K-2: Transfer Learning from Unbiased Training Data Sets for QoT Estimation in WDM Networks
Pesic, Jelena (1); Lonardi, Matteo (1); Seve, Emmanuel (1); Rossi, Nicola (2); Zami, Thierry (2)
(1) Nokia Bell Labs (France), (2) Nokia (France)
Abstract: We assess the benefits of transfer learning based on artificial neural networks (ANN) using unbiased training data sets for QoT-estimation of unestablished light paths. This study considers transfer learning from the CONUS topology and from an unbiased training data set to the Germany50 topology.

09:50 (AM Session) & 19:50 (PM Session)

Mo2K-3: Soft Failure Localization Using Machine Learning with SDN-based Network-wide Telemetry
Mayer, Kayol; Aguiar Soares, Jonathan; Pablo Pinto, Rossano; Esteve Rothenberg, Christian; Soares Arantes, Dalton; Augusto de Arruda Mello, Darli
University of Campinas (Brazil)
Abstract: Targeting soft failure localization, we present a machine learning approach using SDN streaming telemetry of network-wide parameters. The artificial neural network only requires a few training scenarios to achieve adequate interpolation performance. The framework implementation is validated using gNMI telemetry in an emulated NSFNet topology.

10:00 (AM Session) & 20:00 (PM Session)

Mo2K-4: Power Evolution Prediction and Optimization in a Multi-span System Based on Component-wise System Modeling
Yankov, Metodi (1); de Moura, Uiara (2); Da Ros, Francesco (1)
(1) DTU Fotonik, Technical University of Denmark (Denmark), (2) Department of Photonics Engineering, Technical University of Denmark (Denmark)
Abstract: Cascades of a machine learning-based EDFA gain model trained on a single physical device and a fully differentiable stimulated Raman scattering fiber model are used to predict and optimize the power profile at the output of an experimental multi-span fully-loaded C-band optical communication system.

10:10 (AM Session) & 20:10 (PM Session)

Mo2K-5: Using QoT-E for Open Line Controlling and Modulation Format Deployment: an Experimental Proof of Concept
Borraccini, Giacomo (1); Straullu, Stefano (2); Ferrari, Alessio (1); Virgilito, Emanuele (1); Bottacchi, Stefano (3); Swail, Scott (3); Piciaccia, Stefano (4); Galimberti, Gabriele (4); Grammel, Gert (5); Curri, Vittorio (1)
(1) Politecnico di Torino (Italy), (2) Links Foundation (Italy), (3) Lumentum (USA), (4) Cisco Photonics (Italy), (5) Juniper Networks (Germany)
Abstract: We propose open line controlling and a modulation format setting based on GNPy GSNR evaluation, and test an experimental setup including an 8-span line equipped by commercial EDFAs, transporting two wavelengths from the open box Cassini. Excellent results are shown for GSNR flattening and prediction.

10:20 (AM Session) & 20:20 (PM Session)

Mo2K-6: Open-Source QoT Estimation for Impairment-Aware Path Computation in OpenROADM Compliant Network
Triki, Ahmed (1); Le Rouzic, Esther (1); Renais, Olivier (1); Lambert, Guillaume (1); Thouenon, Gilles (1); Betoule, Christophe (1); Delfour, Emmanuelle (1); Vachhani, Shweta (2); Bathula, Balagangadhar (2)
(1) Orange Labs (France), (2) AT&T Labs (USA)
Abstract: Given the variety of open-source initiatives, we propose to use GNPy as reference for QoT computation in multi-vendor optical transport networks. Therefore, we develop an API to allow GNPy to dynamically interact with any controller, particularly TransportPCE which uses GNPy to validate computed paths.

 

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Session Tu1K: Low Latency and on-demand Networking
Tuesday 08 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Calabretta, Nicola
Chair PM-session: Bauschert, Thomas

08:00 (AM Session) & 18:00 (PM Session)

Tu1K-1: (Invited) Deterministic latency networks for 5G applications
Benzaoui, Nihel
Nokia Bell Labs (France)
Abstract: 5G applications require low and controlled latency. We believe that a network capable of delivering this deterministic performance must be slotted, scheduled, and synchronous. We discuss how 5G requirements are impacting network architecture, and outline the main candidates to enable deterministic latency networking.

08:30 (AM Session) & 18:30 (PM Session)

Tu1K-4: On the hardware cost of end-to-end latency variation control for time-slotted optical networks
Szczerban, Mijail (1); Benzaoui, Nihel (1); Bigo, Sébastian (1); Ouslimani, Achour (2); Kasbari, Abed-Elhak (2)
(1) Nokia Bell Labs (France), (2) Quartz Lab, ENSEA (France)
Abstract: We experimentally study the impact of latency variation (jitter) compensation mechanism (JCM) on the network hardware in time-slotted optical networks. We implement a JCM that enforces latency variation below 30 ns, and we experimentally found trade-offs between guaranteed latency value, reservation granularity and memory requirements.

08:40 (AM Session) & 18:40 (PM Session)

Tu1K-5: Deterministic Dynamic Network-Based Just-in-Time Delivery for Distributed Edge Computing
Sahoo, Subhadeep (1); Bao, Ning-Hai (2); Bigo, Sébastian (1); Benzaoui, Nihel (1)
(1) Nokia Bell Labs (France), (2) Chongqing University of Posts and Telecommunications (China)
Abstract: For distributed Edge Computing, we propose to leverage the deterministic data delivery in optical Determinist Dynamic Networks to jointly optimize compute and network resource allocation. Numerical results show that our DDN-based approach can accelerate the application total execution time by 50- 70% from baseline approaches.

08:50 (AM Session) & 18:50 (PM Session)

Tu1K-6: On Demand Network Services Deployment in Optical Metro Edge Computing Network Based on User and Application Requests and Infrastructure Telemetry
Pan, Bitao; Yan, Fulong; Guo, Xiaotao; Xue, Xuwei; Calabretta, Nicola
Eindhoven University of Technology (The Netherlands)
Abstract: We demonstrate an automatic optical metro network based on programmable traffic interface and SOA ROADM. Automatic telemetry assisted network service chains deployment has been experimentally investigated and optimized based on the user request and application requirements. Results shows less than 200us latency for critical application.

 

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Session Tu2K: Network Telemetry
Tuesday 08 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Furukawa, Hideaki
Chair PM-session: Bigo, Sebastien

09:30 (AM Session) & 19:30 (PM Session)

Tu2K-1: (Extended) Stream Processing for Optical Network Monitoring with Streaming Telemetry and Video Analytics
Simsarian, Jesse (1); Nance Hall, Matthew (2); Hosangadi, Gurudutt (1); Gripp, Jurgen (3); Van Raemdonck, Wolfgang (4); Yu, Jiakai (5); Sizer, Theodore (1)
(1) Nokia Bell Labs (USA), (2) University of Oregon, Computer and Information Science (USA), (3) Nokia ION Optics (USA), (4) Nokia Bell Labs (Belgium), (5) College of Optical Sciences, University of Arizona (USA)
Abstract: We use a cloud platform to demonstrate the processing of streaming data from diverse sources for infrastructure monitoring. Telemetry data from an optical network testbed is processed for alarm generation by anomaly detection. The optical alarm is correlated with machine-learning person detection by video analytics.

10:00 (AM Session) & 20:00 (PM Session)

Tu2K-4: Telemetry-enabled Cloud-native Transport SDN Controller for Real-time Monitoring of Optical Transponders Using gNMI
Vilalta, Ricard (1); Manso, Carlos (1); Yoshikane, Noboru (2); Muñoz, Raul (1); Casellas, Ramon (1); Martínez, Ricardo (1); Tsuritani, Takehiro (2); Morita, Itsuro (2)
(1) Centre Tecnològic de Telecomunicacions de Catalunya (Spain), (2) KDDI Research, Inc (Japan), (2) KDDI Research, Inc. (Japan)
Abstract: This paper presents novel extensions for Cloud-native SDN controller for partially disaggregated optical networks that allow real-time monitoring of optical transponders. New SDN controller components are presented, as well as overall architecture. Evaluation is performed with gNMI enabled OpenConfig transceivers.

10:10 (AM Session) & 20:10 (PM Session)

Tu2K-5: (Highly scored) Augmented In-Band Telemetry to the User Equipment for Beyond 5G Converged Packet-Optical Networks
Scano, Davide (1); Paolucci, Francesco (2); Kondepu, Koteswararao (1); Sgambelluri, Andrea (1); Valcarenghi, Luca (1); Castoldi, Piero (1); Cugini, Filippo (3)
(1) Scuola Superiore Sant’Anna (Italy), (1) Scuola Superiore Sant'Anna (Italy), (2) Scuola Superiore Sant’Anna, CNIT (Italy), (3) CNIT (Italy)
Abstract: Traffic monitoring through in-band telemetry is extended up to the User Equipment (UE), providing accurate e2e latency measurement. The UE becomes aware of its experienced service performance, enabling autonomous operations for faster automatic source-based Edge-Cloud steering.

 

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Session We1K: Network Control and Management
Wednesday 09 December 2020     08:00 - 09:10  (AM Session)    &    18:00 - 19:10  (PM Session)
Chair AM-session: Shen, Giangxiang (Steven)
Chair PM-session: Nejabati, Reza

08:00 (AM Session) & 18:00 (PM Session)

We1K-1: SDN/NFV Control and Orchestration of Dynamic Optical Beamforming Services for Beyond 5G Fronthaul Networks
Muñoz, Raul (1); Brenes, Juan (2); Rommel, Simon (3); Grivas, Evangelos (4); Manso, Carlos (1); Landi, Giada (2); Vilalta, Ricard (1); Casellas, Ramon (1); Martínez, Ricardo (1); Tafur Monroy, Idelfonso (3)
(1) CTTC (Spain), (2) Nextworks (Italy), (3) TU/e (The Netherlands), (4) Eulambia (Greece)
Abstract: This paper presents and experimentally validates an SDN/NFV architecture for the management of optical beamforming connectivity and network services for beyond 5G fronthaul, controlling OBFN coherent and incoherent systems, ARoF transceivers, BBUs with analog output/input and RRHs

08:10 (AM Session) & 18:10 (PM Session)

We1K-2: Two-Level Abstraction Approach for SDN-based Service Provisioning in Open Line Systems Featuring TAPI Externalized Path Computation
Ishii, Kiyo (1); Casellas, Ramon (2); Vilchez, Fco. Javier (2); Vilalta, Ricard (2); Martínez, Ricardo (2); Fabrega, Josep Maria (2); Nadal, Laia (2); Svaluto Moreolo, Michela (2); Muñoz, Raul (2); Namiki, Shu (1)
(1) National Institute of Advanced Industrial Science and Technology (AIST) (Japan), (1) National Institute of Advanced Industrial Science and Technology (Japan), (2) Centre Tecnològic de Telecomunicacions de Catalunya (Spain)
Abstract: Co-employment of node level and component level model is essential to achieve both SDN controller scalability and accurate path computation for functional block-based disaggregation networks. A proposed control system is prototyped and optical path provisioning within 30 seconds is demonstrated on an optical network testbed.

08:20 (AM Session) & 18:20 (PM Session)

We1K-3: Managing Network Slicing Resources Using Blockchain in a Multi-Domain Software Defined Optical Network Scenario
Alemany, Pol; Vilalta, Ricard; Muñoz, Raul; Martínez, Ricardo; Casellas, Ramon
Centre Tecnològic de Telecomunicacions de Catalunya (Spain)
Abstract: This paper presents an experimental validation to use a peer-to-peer network composed of network slicing managers to manage and share optical network resources using Blockchain in a network scenario with multiple domains and without the need of a central authority that validates any information exchange.

08:30 (AM Session) & 18:30 (PM Session)

We1K-4: Dynamic Traffic Management of OLT Backhaul/Service Ports with SDN Controller
Wang, Minqi (1); Simon, Gael (1); Anet Neto, Luiz (1); Amigo, Isabel (2); Nuaymi, Loutfi (2); Chanclou, Philippe (1)
(1) Orange (France), (2) IMT Atlantique (France)
Abstract: We propose and verify experimentally a dynamic traffic management of both backhaul and service ports of an OLT by using a switch, some smart SFP and SDN abstraction. In addition to efficient management, energy savings can be obtained.

08:40 (AM Session) & 18:40 (PM Session)

We1K-5: (Invited) Control and Management of Optical Inter-Satellite Network based on CCSDS Protocol
Huang, Shanguo (1); Guo, Bingli (1); Yuan, Yabo (2); Wang, Bo (2); Zhang, Yu (1); Yang, Hai (1); Jiang, Mingyi (1); Wang, Yixiang (1); Fu, Mingjiang (1); Liu, Yiting (1)
(1) State Key Lab. of Information Photonics and Optical Communication, Beijing University of Posts and Telecommunications (China), (2) Beijing institute of tracking and telecommunication technology (China)
Abstract: A network control architecture and Advanced Orbiting Systems (AOS) frame switching scheme suitable for inter-satellite optical network are proposed and demonstrated. The proposed scheme will facilitate on-board data forwarding of resource and energy hungry satellite by avoiding unnecessary data packing and unpacking for bypass traffic.

 

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Session We2K: Network Planning
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Tzanakaki, Anna
Chair PM-session: Chen, Jiajia

09:30 (AM Session) & 19:30 (PM Session)

We2K-1: (Invited) Root Cause Analysis for Autonomous Optical Networks: A Physical Layer Security Use Case
Natalino, Carlos (1); Di Giglio, Andrea (2); Schiano, Marco (2); Furdek, Marija (1)
(1) Chalmers University of Technology (Sweden), (2) Telecom Italia (Italy)
Abstract: To support secure and reliable operation of optical networks, we propose a framework for autonomous anomaly detection, root cause analysis and visualization of the anomaly impact on optical signal parameters. Verification on experimental physical layer security data reveals important properties of different attack profiles.

10:00 (AM Session) & 20:00 (PM Session)

We2K-4: Address Challenges in Placing Distributed Fiber Optic Sensors
Ye, Zilong (1); Ji, Philip (2); Wang, Ting (2)
(1) California State University Los Angeles (USA), (2) NEC Laboratories America (USA)
Abstract: We are the first to investigate a novel problem, called distributed fiber optic sensor placement, in the context of Infrastructure-as-a-Sensor. We propose an ILP-based optimal solution and a close-to-optimal heuristic solution, both of which aim at minimizing the cost of sensors.

10:10 (AM Session) & 20:10 (PM Session)

We2K-5: Planning Optical Networks for Unexpected Traffic Growth
Patri, Sai (1); Autenrieth, Achim (2); Elbers, Jörg-Peter (2); Mas Machuca, Carmen (3)
(1) ADVA Optical Networking (Germany), (2) ADVA (Germany), (3) Chair of Communication Networks, Technical University of Munich (Germany)
Abstract: A lightpath configuration algorithm considering a multi-period traffic model is presented and evaluated to a realistic German core network study. Strategically exploiting BVT excess capacity, we show that offered traffic can be carried up to an additional five years in all traffic growth scenarios.

10:20 (AM Session) & 20:20 (PM Session)

We2K-6: Mixed Relay Placement for Quantum Key Distribution Chain Deployment over Optical Networks
Cao, Yuan (1); Zhao, Yongli (1); Li, Jun (2); Lin, Rui (2); Zhang, Jie (1); Chen, Jiajia (2)
(1) Beijing University of Posts and Telecommunications (China), (2) Chalmers University of Technology (Sweden)
Abstract: Four mixed trusted/untrusted relay placement strategies for quantum key distribution chain deployment over optical networks are proposed, which can improve a security level up to 119% relative to the conventional purely trusted relay placement.

10:30 (AM Session) & 20:30 (PM Session)

We2K-7: Benchmarking of Opaque Versus Transparent Core WDM Networks Featuring 400ZR+ QSFP-DD or CFP2 Interfaces
Zami, Thierry (1); Lavigne, Bruno (2); Bertran-Pardo, Oriol (3)
(1) Nokia (France), (2) Nokia/ASN (France), (3) Nokia IP Optical Networks (Italy)
Abstract: This study illustrates and compares how a German and an Indian core WDM networks perform when equipped with 400ZR+ QSFP56-DD or CFP2-DCO regional transponders, depending on whether they are designed as opaque or as transparent elastic networks.

 

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Session Th1K: Advanced Networking
Thursday 10 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Munoz, Raul
Chair PM-session: Riccardi, Emilio

08:00 (AM Session) & 18:00 (PM Session)

Th1K-1: (Invited) Reconfigurable Optical Networks with Self-Tunable Transceivers: Implementation Options and Control
Eiselt, Michael H.
ADVA (Germany)
Abstract: This paper reviews methods for autonomous tuning of optical transceivers, based on an overhead management channel between the modules on both sides of the link. Different implementation options for the tuning principle, as well as for the tunable laser are introduced.

08:30 (AM Session) & 18:30 (PM Session)

Th1K-4: An End-to-End Real-Time Connectivity Testbed Exploiting Standardized Dynamic Data-Plane PON Technologies
Kosmatos, Evangelos (1); Matrakidis, Chris (1); Uzunidis, Dimitris (1); Kostopoulos, Paris (2); Stavdas, Alexandros (2); Lord, Andrew (3)
(1) OpenLightComm Ltd (United Kingdom), (2) University of Peloponnese (Greece), (3) British Telecom (United Kingdom)
Abstract: To avoid the cost of overprovisioning in dedicated connectivity schemes, we developed a real-time reconfigurable connectivity platform spanning Metro and Access by utilising the dynamic data-plane of commercial PON technologies and a novel SDN control-plane. We demonstrated end-to-end orchestration of < 10 seconds in all cases.

08:40 (AM Session) & 18:40 (PM Session)

Th1K-5: Collision Aware Flow-Based Adaptive Resource Allocation for SDN-enabled SDM Optical Packet Switching Networks
Hashimoto, Yuusuke (1); KUBOTA, Kosuke (1); FUJIMOTO, Akihiro (2); TANIGAWA, Yosuke (1); Hirota, Yusuke (3); TODE, Hideki (1)
(1) Osaka Prefecture University (Japan), (2) Wakayama University (Japan), (3) National Institute of Information and Communications Technology (Japan)
Abstract: We propose a flow-based adaptive resource allocation in SDM-OPS networks. It attained 24.6% of packet loss probability and 13.8% of the proportion of Degraded Flows compared to baseline methods. Furthermore, its feasibility was verified via functional experiment using real testbed emulated as SDM environment.

08:50 (AM Session) & 18:50 (PM Session)

Th1K-6: (Highly scored) Modelling Multi-Vendor Transponders Performance and Optimizing Launch Power
Mahajan, Ankush (1); Christodoulopoulos, Konstantinos (2); Martínez, Ricardo (1); Spadaro, Salvatore (3); Muñoz, Raul (1)
(1) Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) (Spain), (2) Nokia Bell Labs Stuttgart (Germany), (3) Universitat Politècnica de Catalunya (Spain)
Abstract: We propose physical layer model extensions that capture the performance variations of multi-vendor transponders and use those with appropriate algorithms to optimize connections’ launch powers. We estimated potential SNR improvements upto ~35% for 4 different vendors in a network of 27 nodes.

 

CLEO/Europe Focus Meeting

 

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Session We1L: Neuromorphic Computing
Wednesday 09 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Krauss, Thomas
Chair PM-session: Krauss, Thomas

08:00 (AM Session) & 18:00 (PM Session)

We1L-1: (Invited) Large scale optical neural networks based on photoelectric multiplication
Soljačić, Marin
MIT (USA)
Abstract: Not available

08:30 (AM Session) & 18:30 (PM Session)

We1L-4: Unsupervised Image Classification Through Time-Multiplexed Photonic Multi-Layer Spiking Convolutional Neural Network
Mesaritakis, Charis (1); Skontranis, Menelaos (1); Sarantoglou, George (1); Deligiannidis, Stavros (2); Bogris, Adonis (2)
(1) University of the Aegean (Greece), (2) University of West Attica (Greece)
Abstract: We present results of a deep photonic spiking convolutional neural network, based on two- section VCSELs, targeting image classification. Training is based on unsupervised spike-timing dependent plasticity, whereas neuron time-multiplexing and ultra-fast response are exploited towards a a reduction of the physical neuron count by 90%

08:40 (AM Session) & 18:40 (PM Session)

We1L-5: Resonate and Fire Neuromorphic Node based on two - section Quantum Dot Laser with multi-waveband dynamics
Mesaritakis, Charis (1); Sarantoglou, George (1); Skontranis, Menelaos (1); Bogris, Adonis (2)
(1) University of the Aegean (Greece), (2) University of West Attica (Greece)
Abstract: We present the experimental results regarding an excitable, two – section quantum dot laser exhibiting resonate and fire dynamics. Moreover, we explore the beneficial role of quantum dot assisted multi – waveband emission in enhancing the firing rate and the temporal resolution of photonic neuromorphic processors.

08:50 (AM Session) & 18:50 (PM Session)

We1L-6: Bandwidth Enhanced Operation of Photonic Time Delay Reservoir Computing
Estébanez, Irene; Schwind, Janek; Fischer, Ingo; Argyris, Apostolos
IFISC (CSIC-UIB) (Spain)
Abstract: We show numerically and experimentally that strong optical injection can enhance the operating bandwidth of semiconductor lasers with optical feedback in a photonic time-delay reservoir computing configuration. Its operating conditions can be expanded while maintaining competitive computational performance in a time-series prediction task.

 

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Session We2L: Nano and quantum photonics
Wednesday 09 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Osellame, Roberto
Chair PM-session: Goykhman, Ilya

09:30 (AM Session) & 19:30 (PM Session)

We2L-1: (Invited) MEMS Plasmonics and Memristive Plasmonics for Optical Communications
Leuthold, Juerg (1); Cheng, Bojun (1); Lewerenz, Mila (1); Passerini, Elias (1); Fedoryshyn, Yuriy (1); Koch, Ueli (1); Emboras, Alexandros (2); Luisier, Mathieu (2); Xie, Fangqing (3); Schimmel, Thomas (3); Haffner, Christian (1)
(1) IEF ETH Zurich (Switzerland), (2) ISS ETH Zurich (Switzerland), (3) Karlsruhe Institute of Technology (KIT) (Germany)
Abstract: Plasmonics allows for an unmatched miniaturization. Along with the shrinking comes power efficient operation. Here, we show how plasmonics allows for an unprecedented downscaling of the classical MEMS and even of emerging memristive approaches. Ultimately, we will demonstrate optical elements at the atomic scale.

10:00 (AM Session) & 20:00 (PM Session)

We2L-4: (Invited) Strainoptronics: A New Degree of Freedom for 2D Material Device Engineering
Maiti, Rishi; Sorger, Volker J.
George Washington University (USA)
Abstract: Here we introduce ‘strainoptronics’ – the local strain engineering of 2D materials for novel optoelectronic components. We exemplary demonstrate heterogeneously integrating 2D materials in photonic circuits thus realizing a photodetector featuring a strong photoresponse (responsivity 0.5 A W–1) operating at 1,550 nm in silicon photonics.

10:30 (AM Session) & 20:30 (PM Session)

We2L-7: Demonstration of SiN-photonic Controlled-NOT Gate using Path-entangled Qubit Pairs from a Si-photonic Quantum Splitter
Lee, Jong-moo (1); Lee, Wook-Jae (1); Kim, Min-su (1); Cho, Sungwan (1); Navickaite, Gabriele (2); Fernandez, Juan (3); Ju, Jung Jin (1)
(1) ETRI (South Korea), (2) Ligentec (Switzerland), (3) VLC Photonics (Spain)
Abstract: We fabricate a silicon-nitride photonic integrated circuit (PIC) to demonstrate a controlled-NOT quantum-logic gate and a silicon PIC generating path-entangled qubit pairs by splitting degenerate photon pairs. We measure 81% fidelity of CNOT using the fully packaged PICs.

10:40 (AM Session) & 20:40 (PM Session)

We2L-8: Real-Time Self-Testing QuantumRandom Number Generator with Non-classical States
Haw, Jing Yan (1); Michel, Thibault (2); G. Marangon, Davide (3); Thearle, Oliver (4); Vallone, Giuseppe (3); Villoresi, Paolo (3); Lam, Ping Koy (4); M Assad, Syed (4)
(1) National University of Singapore (Singapore), (2) CQC2T, Department of Quantum Science, The Australian National University / UPMC-Sorbonne Universités (Australia / France), (3) Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova (Italy), (4) CQC2T, Department of Quantum Science, The Australian National University (Australia)
Abstract: The certification of private randomness of quantum origin is paramount for cryptographic applications. By trusting the measurement device, conjugate quadrature measurements allows us to quantify insecure side-information on the measured state with bounded energy. We demonstrate a live self-checking random number generator using squeezed states.

 

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Session Th1L: Novel laser sources
Thursday 10 December 2020     08:00 - 09:00  (AM Session)    &    18:00 - 19:00  (PM Session)
Chair AM-session: Gioannini, Mariangela
Chair PM-session: Herr, Tobias

08:00 (AM Session) & 18:00 (PM Session)

Th1L-1: (Invited) In-plane monolithic integration of scaled III-V photonic devices
Vico Triviño, Noelia; Mauthe, Svenja; Scherrer, Markus; Tiwari, Preksha; Wen, Pengyan; Sousa, Marilyne; Schmid, Heinz; Moselund, Kirsten E.;
IBM (Switzerland)
Abstract: In this work we will discuss the use of Template-Assisted Selective Epitaxy (TASE) for the monolithic in-plane integration of active III-V photonic devices on silicon. We will show the use for high-speed InGaAs detectors, as well as for hybrid III-V/Si photonic crystal structures

08:30 (AM Session) & 18:30 (PM Session)

Th1L-4: (Highly scored) Ultra-Dense III-V-on-Silicon Nitride Frequency Comb Laser
Cuyvers, Stijn (1); Haq, Bahawal (1); Op de Beeck, Camiel (2); Poelman, Stijn (2); Hermans, Artur (1); Wang, Zheng (1); Roelkens, Gunther (2); Van Gasse, Kasper (1); Kuyken, Bart (2)
(1) Ghent University - imec (Belgium), (2) Ghent University (Belgium)
Abstract: A heterogeneously integrated III-V-on-silicon nitride mode-locked laser is demonstrated. The device is fabricated by microtransfer printing an InP/InAlGaAs-based multiple-quantum-well coupon. A dense comb with a 755 MHz repetition rate, a 1 Hz ASE limited RF linewidth and a 200 kHz optical linewidth is achieved.

08:40 (AM Session) & 18:40 (PM Session)

Th1L-5: Enhanced-Field-of-View Solid-State VCSEL Beam Scanner with Lateral Resolution Points of More than 1200
Li, Ruixiao; Ho, ZeuKu; Gu, Xiaodong; Koyama, Fumio
Tokyo Institute of Technology (Japan)
Abstract: We introduced one-dimensional DOE to a solid-state VCSEL beam scanner for increasing its scanning field-of-view in 3D sensing. It produced covered field-of-view of 36°×16°and a record number of resolution points of more than 1,200 with external light driving and 300 in a tunable VCSEL-integrated scanner.

 

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Session Th2L: Novel photonic device concepts
Thursday 10 December 2020     09:30 - 11:00  (AM Session)    &    19:30 - 21:00  (PM Session)
Chair AM-session: Koenderink, Femius
Chair PM-session: Van Thourhout, Dries

09:30 (AM Session) & 19:30 (PM Session)

Th2L-1: (Invited) Magnet-Free Routes to Nonreciprocal Photonics
Alù, Andrea
City University of New York (USA)
Abstract: In this talk, we discuss our recent progress in the context of integrated photonic systems that exploit temporal modulations, opto-mechanical phenomena and nonlinearities to enable nonreciprocity without the need for a magnetic bias, and their implications for robust topological propagation of light on chip.

10:00 (AM Session) & 20:00 (PM Session)

Th2L-4: (Invited) Topological Protection of Light Propagation in Photonic Crystals
Verhagen, Ewold (1); Parappurath, Nikhil (1); Arora, Sonakshi (2); Bauer, Thomas (2); Barczyk, René (1); Alpeggiani, Filippo (2); Kuipers, L. (Kobus) (2)
(1) Center for Nanophotonics, AMOLF (The Netherlands), (2) Kavli Institute of Nanoscience, Delft University of Technology (The Netherlands)
Abstract: Two-dimensional photonic crystals allow for various types of photonic topological insulators. In this paper, we present our efforts to directly image on-chip light propagation in topological edge states. We quantify the robustness of such states to scattering at sharp corners and defects.

10:30 (AM Session) & 20:30 (PM Session)

Th2L-7: Wavelength Controllable Forward Prediction and Inverse Design of Nanophotonic Devices Using Deep Learning
Song, Yucheng (1); Wang, Danshi (2); Ye, Han (1); Qin, Jun (3); Zhang, Min (2)
(1) Beijing University of Posts and Telecommunications (China), (2) State Key Laboratory of Information Photonics and Optical Communications (China), (3) Peking University (China)
Abstract: A deep learning-based wavelength controllable forward prediction and inverse design model of nanophotonic devices is proposed. Both the target time and wavelength domain information can be utilized simultaneously, which enables multiple functions, including power splitter and wavelength demultiplexer, to be implemented efficiently and flexibly.

 

DEMO Session

 

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Session Tu5A: Demo Session
Tuesday 08 December 2020     15:30 - 16:50  (AM Session)    &    11:00 - 12:20  (PM Session)
Chair AM-session: Xin (Scott) Yin
Chair PM-session: Xin (Scott) Yin

15:30 (AM Session) & 11:00 (PM Session)

Tu5A-1: (Invited) Demonstration of a Scalable Distributed Antenna System Using Real-Time Bit-Interleaved Sigma-Delta-over-Fiber Architectures
Wu, Chia-Yi; Meysmans, Caro; Li, Haolin; Van Kerrebrouck, Joris; Caytan, Olivier; Lemey, Sam; Bauwelinck, Johan; Demeester, Piet; Torfs, Guy
imec - Ghent University (Belgium)
Abstract: We demonstrate a highly-scalable distributed antenna system enabled by real-time bit-interleaved sigma-delta-over-fiber links. By (time-)interleaving multiple sigma-delta modulated in-phase and quadrature pairs into one bitstream for each fiber, the optical bit-rate efficiency is improved while the remote radio unit complexity remains low.

15:50 (AM Session) & 11:20 (PM Session)

Tu5A-2: Demonstration of Federated Learning over Edge-Computing Enabled Metro Optical Networks
Shariati, Behnam; Safari, Pooyan; Mitrovska, Angela; Hashemi, Nazila; Fischer, Johannes Karl; Freund, Ronald
Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute (Germany)
Abstract: We demonstrate the benefits of a federated learning framework for (re)training of global ML models over geo-distributed data sources. The demonstration is carried out on a live edge computing enabled optical networking test-bed.

16:10 (AM Session) & 11:40 (PM Session)

Tu5A-3: Demonstration of Flexible and Scalable Quantum-resistant Encryption with Threshold Key Management in Optical Networks
Cho, Joo Yeon (1); Patri, Sai (1); Sergeev, Andrew (2)
(1) ADVA Optical Networking (Germany), (2) ADVA Optical Networking (Israel)
Abstract: We demonstrate a flexible and scalable quantum-resistant encryption framework applicable to existing optical networks. Computationally intensive key exchange processes are offloaded on a centralized crypto module while encryption keys are converted into multiple shares and distributed to key servers by a threshold key management protocol.

16:30 (AM Session) & 12:00 (PM Session)

Tu5A-4: (Invited) SDN-Enabled Reconfigurable Optical Data Center Network with Automatic Network Slicing to Provision Dynamic QoS
Xue, Xuwei (1); Pan, Bitao (1); Agraz, Fernando (2); Pagès, Albert (2); Guo, Xiaotao (1); Yan, Fulong (1); Spadaro, Salvatore (2); Calabretta, Nicola (1)
(1) Eindhoven University of Technology (The Netherlands), (2) Universitat Politècnica de Catalunya (Spain)
Abstract: An SDN-controlled optical DCN enabling automatic QoS-driven network-slice provisioning, reconfiguration and flow-priority updating is demonstrated for the first time. Network-slice reconfigurations with guaranteed QoS based on monitored statistics are achieved within 125 ms with 3.485 μs server-to-server latency and zero packet-loss at 0.7 load.