bluuebunny/crossref_metadata_2025 huggingface dataset:
Fast and Accurate DNN-Based Approach in Maximizing Ultra-Wideband Fiber-Optic Systems Throughput
Authors: Gan Zelin , Shevchenko Mykyta , Herzberg Sam Nallaperuma , Savory Seb J.
Published: May 2024

We present a fast and accurate physical layer model assisted by a neural network to maximize the throughput for ultra-wideband systems. The proposed approach significantly saves computation time and keeps the same precision.
Low-Crosstalk 8×8 Silicon Photonic Switch Fabric with Dual-Stage MZI Cells
Authors: Bao Peng , Yao Chunhui , Talli Giuseppe , Kuschnerov Maxim , Penty Richard , Cheng Qixiang
Published: May 2024

We demonstrate a strictly non-blocking 8×8 silicon photonic switch fabric with centrally placed dual-stage MZI cells that effectively suppress first-order crosstalk. This thermally actuated device exhibits on-chip loss of <5dB and low-crosstalk of <-40dB.
Multi-wavelength sources for Optical IO Co-packaged optics
Authors: Sysak Matthew N. , Roucka Radek , Li Nandita Aggarwal Chen , Luna Fernando , El-Hemawy Sally , Frey John , Raval Manan , Wang Ken , Yang Li-fan , Wade Mark , Sun Chen
Published: May 2024

8 and 16 wavelength optical sources for optical IO applications are reviewed. A new CW-WDM MSA compliant, 16 wavelength source operating from 20 to 100°C is presented.
400 Gbit/s Dual-Wavelength and Dual-Polarization IM-DD TDM-PON with 34 dB Power Budget
Authors: van Veen Doutje , Borkowski Robert , Vijayan Kovendhan , Mahadevan Amitkumar , Houtsma Vincent
Published: May 2024

We demonstrate a 400G dual-wavelength dual-polarization IM-DD TDM-PON based on optical duobinary modulation with 34 dB back-to-back optical power budget. After 20 km of SSMF we find an optical path penalty below 1 dB.
A 92% Complexity Reduction of Low-Latency Multi-Group Precoding Scheme based on Björck Sequences
Authors: Wang Geyang , Chan David W.U , Tsang Hon Ki , Mow Wai Ho , Chen Lian-Kuan
Published: May 2024

We present a multi-group precoding scheme based on Björck sequences, achieving a tradeoff between complexity and BER performance. Experiments at ~200 Gb/s demonstrate that the proposed approach outperforms OCT while reducing complexity by 92%.
New Applications and Technologies of Optical Access
Authors: Effenberger Frank
Published: May 2024

Fiber optic access networks are the defacto solution for broadband service. This paper explores the current work on new applications of passive optical networks and new technologies that may play a role in its future.
Nonlinear SNR Estimation based on Power Profile Estimation in Hybrid Raman-EDFA Link
Authors: Kim Inwoong , Sone Kyousuke , Vassilieva Olga , Oda Shoichiro , Palacharla Paparao , Hoshida Takeshi
Published: May 2024

We demonstrate the nonlinear SNR estimation based on longitudinal power profile obtained with coherent receiver. The estimation error is less than 0.6 dB in WDM transmission over hybrid Raman-EDFA link.
Reflective Microresonator based Microwave Photonic Sensor Assisted by Sparse Transformer
Authors: Tian Xiaoyi , Chen Yeming , Sved Joel , Yan Yiming , Zhou Luping , Li Liwei , Nguyen Linh , Yi Xiaoke
Published: May 2024

We demonstrate a sparse transformer assisted microwave photonic sensor using a microring cascaded with an inverse designed reflector. Even with a small dataset, the root-mean-square-error of a temperature estimation model is achieved as 0.0074 °C.
Double-decker CDC-ROADM node for multi-band network with wavelength band granularity
Authors: Suzuki Kenya , Ota Masashi , Morimoto Yoshie , Yamaguchi Keita , Hamaoka Fukutaro , Sugawara Shuto , Sasai Takeo , Kobayashi Takayuki , Nakamura Masanori , Katayose Satomi , Umeki Takeshi , Ogawa Daisuke , Ma Yiran , Camatel Stefano , Fukutoku Mitsunori , Miyamoto Yutaka , Moriwaki Osamu
Published: May 2024

We propose double-decker ROADM node by introducing a band cross-connect in addition to the conventional wavelength cross-connect, which is suitable for a multi-band network. This configuration provides improved transmission characteristics compared with a conventional CDC-ROADM.
Optimal Nonlinear Spectral Back-Rotation for Discrete Eigenvalue NFT Transmission Systems
Authors: Xu Chuang , Lau Alan Pak Tao
Published: May 2024

We propose back rotating the nonlinear spectral phase by half of the transmission distance as a computationally simple impairment compensation algorithm for discrete eigenvalue NFT transmission systems.
100 Gbps WDM OWC Link Performance Using IMOS Surface Grating Coupler and Commercial Fiber Receivers
Authors: Wolny Mikolaj , Deng Jiangrui , Reniers Sander , Koonen Ton , Tangdiongga Eduward
Published: May 2024

We propose the use of an IMOS surface grating coupler for light collection and commercial pigtailed receivers for light detection in short-link OWC system. We demonstrate error-free OOK transmission of four 25 Gbps WDM channels.
Over 1-Watt Analog RoF Signal Transmission Using a 1-km Hollow-Core Photonic Bandgap Fiber
Authors: Murakami Kai , Sugiura Souya , Yamaji Hironori , Matsuura Motoharu , Takagi Takeshi , Mukasa Kazunori
Published: May 2024

We demonstrate analog RoF transmission with signal power exceeding 1-Watt using a hollow-core photonic bandgap fiber. Due to the low nonlinearity, superior transmission performance was obtained in single- and four-channel transmission compared to silica-core fibers.
End-to-end QoT Predictions enhanced by GNPy-based Digital Twin with Network Telemetry
Authors: Shen S. , Li H. , Tyrovolas A. , Teng Y. , Nejabati R. , Yan S. , Simeonidou D.
Published: May 2024

Digital twin for dynamic optical networks is implemented using GNPy, network telemetry and databases. It enhances ML-based End-to-End QoT predictions in field trials by supporting model pre-training and minimizing data requirements through the AI engine.
400G cost-effective EML for B5G/6G Fronthaul Network
Authors: Lee Seungchul , Kim Namje , Park Miran , Yoon Kihong , Hwang Mihee , Yu Joonsang , Lee Sangho , Kwon O-Kyun
Published: May 2024

We demonstrate a cost-effective 400G EML operating within O-band CWDM. This device, designed with an identical active layer, maintains a TDECQ value below 2 dB under 100G PAM4 modulation at 50 ℃.
Interleaved Dielectric-Metal Plasmonic Grating Polarizer
Authors: Cui Yao , Ji Yipeng , Kapraun Jonas , Shen Chih-Chiang , Wang Jiaxing , Chang-Hasnain Connie J.
Published: May 2024

We demonstrate novel metasurface optics leveraging the interaction of interleaved dielectric and metal plasmonic subwavelength gratings. A flat polarizer with high extinction ratio and high transmission for a wide angle of incidence is reported.
TeraFlowSDN controlling SDM and wideband optical networks
Authors: Sgambelluri A. , Sambo N. , Ismaeel M. , Gifre L. , Manso C. , Enrico M. , Fabrega J.M. , Vilalta R. , Munoz R.
Published: May 2024

A SDN controller based on TeraFlow is designed and implemented to control optical networks including parallel fibers a nd o ptical-band s witching. A n e xperimental validation is carried out with OpenConfig transponders and OpenConfig augmented multi-granular nodes.
Automated Control Plane for Reconfigurable Optical Crosshaul in Next Generation RAN
Authors: Tao Yijie , Ranaweera Chathurika , Edirisinghe Sampath , Lim Christina , Nirmalathas Ampalavanapillai , Wosinska Lena , Song Tingting
Published: May 2024

The paper proposes a unified a utomated c ontrol p lane o f a n SDN-enabled densely deployed reconfigurable optical crosshaul for future radio access networks, with tested ability to perform sub-second automated reconfiguration on low-cost and low-bandwidth control plane.
Accurate Beyond-400G Transmitter Quality Metric Based on Transmitter Constellation Closure Measurement
Authors: Fan Qirui , Liu Xiang
Published: May 2024

We demonstrate the use of transmitter constellation closure (TCC) for accurate quality assessment of beyond-400G coherent transmitters, and show its tolerance to inter-symbol interference and phase noise with and without probability constellation shaping (PCS).
Beam-Steering Based on Dispersive Optical Phased Array for FMCW LiDAR Application
Authors: Jiang Xingyi , Zhang Zhaoyang , Huang Qikai , Zhang Qiang , Yang Jianyi , Yu Hui
Published: May 2024

We demonstrate dispersive optical phased arrays based on the Si3N4-on-Si platform. Two-dimensional beam steering across a 45.6 °× 10 °FOV with a beam width of 1.45 °× 0.032 °is achieved by wavelength tuning alone. Besides, FMCW ranging operation at a target distance of 10 m are experimentally performed.
Span Order Dependency for Nonlinear Interference Noise over In-homogeneous Multispan O-band Coherent Transmission
Authors: Elson Daniel J. , Jarmolovičius Mindaugas , Yoshikane Noboru , Tsuritani Takehiro , Sillekens Eric , Bayvel Polina , Killey Robert , Wakayama Yuta
Published: May 2024

Coherent O-band transmission was conducted in the nonlinear regime. For spans with an in-homogeneous zero dispersion wavelength, the amount and spectral content of nonlinear interference noise was found to be dependent on span order.
Joint Network and Computing Resource Optimisation in Distributed Quantum Computing
Authors: Bahrani Sima , Wang Rui , Parra-Ullauri Juan , Oliveira Romerson D. , Nejabati Reza , Simeonidou Dimitra
Published: May 2024

We propose an orchestration framework to optimize network and computing resources and minimize degradation from quantum and classical communication in distributed quantum computing interconnect networks.
Secure FSO Transmission with Quantum Deliberate Signal Randomization on the Y-00 Protocol under Fog Conditions
Authors: Futami Fumio , Tanizawa Ken , Kato Kentaro , Hara Yuichiro , Hattori Michikazu , Bekkali Abdelmoula , Suga Yukihiko
Published: May 2024

Security-enhanced 10Gbit/s DP PSK Y-00 cipher transmission is demonstrated with deliberate signal randomization driven by quantum random number generator in free space in dense fog. High security and transmission performance are achieved over the entire transmission system.
Quantum-safe 10 Gbps Site-to-Site IPsec VPN Tunnel over 46 km Deployed Fibre
Authors: Alia O. , Huang A. , Luo H. , Amer O. , Pistoia M. , Lim C.
Published: May 2024

We successfully demonstrated a 10 Gbps QKD-secured IPsec VPN tunnel between two JPMorgan Chase datacenters in a metro network over 46 km of deployed telecom fiber with over 168 hours of continuous operation.
Solar-Blind QKD over Simplified Short-Range FSO Link
Authors: Honz Florian , Hentschel Michael , Walther Philip , Hübel Hannes , Schrenk Bernhard
Published: May 2024

We demonstrate QKD and data communication over an out-door free-space link where large-core fiber substitutes active alignment. We further prove E-band QKD as stable and robust under full daylight, despite the loss of spatial filtering.
Free Space Communication Enabled by Directly Modulated Quantum Cascade Laser
Authors: Pang Xiaodan , Schatz Richard , Joharifar Mahdieh , Dely Hamza , Durupt Laureline , Maisons Gregory , Gacemi Djamal , Puerta Rafael , Bonazzi Thomas , Zhang Lu , Spolitis Sandis , Sun Yan-Ting , Bobrovs Vjačeslavs , Yu Xianbin , Vasanelli Angela , Sirtori Carlo , Ozolins Oskars
Published: May 2024

We summarize our recent experimental studies of free-space communications enabled by directly modulated quantum cascade lasers at both MWIR and LWIR regions. Different detector types with different characteristics are compared.
Large-Core Optics for Simplified Short-Range FSO Links
Authors: Honz Florian , Schrenk Bernhard
Published: May 2024

We evaluate large-core FSO links where excellent coupling pairs with bandwidth fading due to multi-mode propagation. The 10-Gb/s/λ limit for 105-µm double-clad fibers is mitigated by spectral launch tuning, restoring 84% of single-clad 25-Gb/s/λ capacity.
Enhanced Recurrent Neural Network Equalization based on Hidden Feature Extraction Learning for Optical Interconnect
Authors: Yang Chuanchuan , Gao Yunfeng , Wang Jiaxing , Li Hongbin , Chang-Hasnain Constance J.
Published: May 2024

We propose a hidden feature extraction learning method for RNN equalization to improve training efficiency without increasing computational burden. Superior BER is demonstrated in 288 Gb/s 100 m VCSEL-MMF interconnect compared with black-box training strategy.
Hybrid Photonic Integrated Circuits for Quantum Communications
Authors: Kleinert Moritz , Kresse Martin , Simon Sarah , Ott Maximilian , Reck Jakob , Keuer Csongor , Mihov Klara , Weigel Madeleine , Qian Tianwen , Winklhofer Philipp , de Felipe David , Zawadzki Crispin , Keil Norbert , Schell Martin
Published: May 2024

Hybrid photonic integration is promising for the miniaturization of quantum communications setups. We discuss current integration approaches and present hybrid PICs for the generation of polarization-based quantum states and photon pairs in the PolyBoard platform.
Sub-1V Near-Infrared Thin-Film Lithium Niobate Modulator for High-Speed Visible Communication
Authors: Assumpcao Daniel , Renaud Dylan , Shams-Ansari Amirhassan , Loncar Marko
Published: May 2024

We demonstrate state-of-the-art ultra-low voltage (0.7V), high-bandwidth modulators in thin-film lithium niobate operating at near-infrared wavelengths (850nm) and show the ability to transmit 60 GBd signals with direct electrical driving (400 mVpp).
Long-Haul Transmission over Ultra-Low Attenuation and Crosstalk 4-Core Multicore Fiber
Authors: Downie John D. , Hurley Jason , Gray Mark , Johnson Stephen
Published: May 2024

We report long-haul transmission up to 9000 km with conventional 75 km spans over 4-core multicore fiber with ultra-low attenuation (0.155-0.156 dB/km) and crosstalk supporting co-propagating and bi-directional transmission configurations with equal performance.
Experimental Demonstration of Single-wavelength net 16.1Tb/s Self-Homodyne Coherent Transmission over a 24-Core Fiber
Authors: Yan Guofeng , Yang Min , Wang Kangrui , Cai Chengkun , Han Bing , Wan Zhenyu , Zheng Shuo , Zhu Yanjun , Zhang Hua , Yao Chaonan , Shao Yuchen , Wang Jian
Published: May 2024

We demonstrate the transmission of 102-Gbaud DP-16QAM signals over a 2.7km 24-core fiber in the SDM-SHD system, employing MHz-linewidth DFB laser and FIFO devices based on femtosecond laser direct writing technique.
Tailoring Large Scale Manufacturing of MCF to High-Capacity Subsea Systems
Authors: Bennett Kevin
Published: May 2024

Multicore fiber (MCF) targeted for use in subsea systems is under active development. There are many variables and constraints which must be considered in the design, fabrication, and deployment of this new type of fiber to enable its success. This talk will expand upon the details and performance achieved to date by subsea fiber manufacturers through the lens of manufacturing suitability.
Integrated Photonic Microring Resonators for FSR Dependent Microwave Bandpass Filters
Authors: Velamuri Ashitosh , Das Bijoy Krishna
Published: May 2024

We have proposed a uniquely designed silicon photonic microring resonator for microwave bandpass filters; FSR of the microring is key to define the centre frequency. A bandwidth tunable (1.4-4.5GHz) Ku-band filter has been demonstrated experimentally.
Ultra-large Key Space Multi-dimensional Masking Encryption System for DSM-based D-band Wireless Fronthaul
Authors: Zheng Tianqi , Wang Kaihui , Yang Xiongwei , Zhang Qiutong , Li Weiping , Wei Yi , Wang Feng , Zhao Xianming , Zhao Feng , Yu Jianjun
Published: May 2024

We implement a multi-dimensional masking encryption scheme with an ultra-large key space of 10143 in a photonics-aided millimeter radio-over-fiber (ROF) system. The equivalent 1.67GBaud encrypted-4096QAM signal is successfully transmitted and decrypted over a 4.6-km wireless link in the DSM-based D-band wireless fronthaul system.
Mitigating substrate leakage loss on a monolithic SiPh platform: experimental demonstration of hybrid Si-SiN waveguides for O-band datacom
Authors: Bian Yusheng , Lee Won Suk , Chandran Sujith , Aboketaf Abdelsalam , Hirokawa Takako , Dezfulian Kevin , Sorbara Massimo , Banihashemian Fahimeh , Mosleh Salman , Najafi Arman , Liu Qidi , Gong Ming , Rakowski Michal , Ritchie Chris , Sporer Ryan , Zhang Michelle , Song Shenghua , Wong Helen , Dasgupta Arpan , Chowdhury Zahidur , Gallagher Ryan , Lee Jae Gon , Tinkler Janet , Gifford George , Gupta Vikas , Yu Anthony , Giewont Ken , Letavic Ted
Published: May 2024

We introduce the concept of hybrid Si-SiN waveguides to mitigate substrate leakage on a monolithic-SiPh platform. Experimental data indicates añ80% reduction in TM-waveguide loss (resulting in ~0.3 dB/cm-attenuation) and a 9-fold TM-bend loss reduction.
Optical Network Anomaly Detection and Localization Based on Forward Transmission Sensing and Route Optimization
Authors: Ji Philip N. , Ye Zilong , Huang Yue-Kai , de Lima Thomas Ferreira , Aono Yoshiaki , Asahi Koji , Wang Ting
Published: May 2024

We introduce a novel scheme to detect and localize optical network anomaly using forward transmission sensing, and develop a heuristic algorithm to optimize the route selection. The performance is verified via simulations and network experiments.
Expertise-Embedded Machine Learning for Enhanced Failure Management of Optical Modules in OTN
Authors: Sun Zhiming , Zhang Chunyu , Zhang Min , Ye Bing , Wang Danshi
Published: May 2024

We propose an expertise-embedded approach for failure management of optical modules in OTN that incorporates expert decision-making logic into data-driven ML models, thereby enhancing inference capabilities. Empirical assessments reveal a marked performance enhancement in models post-embedding, particularly in few-shot failure scenarios.
DC-Carrier Cooperation for Rapid Restoration against PNE-Node Failure in Optical Networks
Authors: Sahoo Subhadeep , Ferdousi Sifat , Xu Sugang , Hirota Yusuke , Tornatore Massimo , Awaji Yoshinari , Mukherjee Biswanath
Published: May 2024

We propose a rapid restoration strategy against PNE-node failure during post-disaster cooperation among DC providers and optical-network carriers. Our strategy reduces disruption and improves DC-service restoration by 35% in 20% less time compared to baseline.
Disaggregated Confidentiality-Preserving Scheme for Fault Detection in Optical Networks
Authors: Sales R. F. , Ribeiro A. , Silva M. F. , Lobato F. R. , Sgambelluri A. , Valcarenghi L. , Costa J. C. W.
Published: May 2024

We propose a confidentiality-preserving approach based on distributed principal component analysis (PCA) and telemetry data scrambling to detect hard-failures in optical networks. Experiments in a real optical testbed show the suitability of the proposed disaggregated solution.
Real-Time Implementation of Machine-Learning DSP
Authors: Börjeson Erik , Liu Keren , Häger Christian , Larsson-Edefors Per
Published: May 2024

While ML algorithms can learn and adapt to channel characteristics, implementation of ML-based DSP hardware is challenging. We demonstrate a real-time implementation of a model-based ML equalizer that compensates a non-linear and time-varying channel.
Broadband Dual-Polarization 90° Optical Hybrid Array Supporting Spatial Parallelism
Authors: Chen H. , Fontaine N. K. , Ryf R. , Kawashima T. , Kim K. , Tran C. , Huang H. , Huang Y. , Ross-Adams A. , Withford M. J. , Gross S. , Berger K. , Oonuma T. , Kawakami S. , Xu X. , Mazur M. , Dallachiesa L. , Hayashi T. , Antonelli C. , Neilson D. T.
Published: May 2024

We demonstrate a dual-polarization 90° optical hybrid array with <6° phase errors over 300 nm and showcase a multi-core fiber-compatible coherent receiver array using the hybrid array with a 3-dimensional-waveguide device and a 2-dimensional photo-diode array.
Metasurface-based Coherent Receiver Insensitive to LO Polarization
Authors: Komatsu Kento , Ishimura Shota , Ren Chun , Soma Go , Takahashi Hidenori , Tsuritani Takehiro , Suzuki Masatoshi , Nakano Yoshiaki , Tanemura Takuo
Published: May 2024

A dual-polarization (DP) coherent receiver which is insensitive to local oscillator (LO) polarization is proposed and experimentally demonstrated using a single metasurface and five photodetectors. Self-coherent 50-GBd DP-QPSK transmission is accomplished with arbitrary LO polarizations.
Real-time Demonstration of Photonics-assisted W-band 23 Gbps PS-64QAM DMT Signals over 40.5-m Wireless Based on FPGA
Authors: Zhang Long , Wang Kaihui , Zhu Zonghui , Yang Xiongwei , Liu Jiaxuan , Sang Bohan , Tan Jingwen , Chen Ming , Zhao Li , Zhou Wen , Yu Jianjun
Published: May 2024

We have experimentally demonstrated, for the first time, FPGA-based real-time photonics-aided W-band with envelope detector (ED) 23 Gb/s probabilistic shaping (PS) 64QAM DMT signals over 40.5-m wireless link, which creates the longest wireless distance and largest rate for an ED-based photonics-aided W-band wireless transmission with real-time in the world.
Field Trial of E/W-Band Signal Over 30.4-km Wireless Delivery Based on Full Photonic Up- and Down-Conversions Achieving Record Net-Rate and Distance Product
Authors: Liu Yinjun , Tao Li , Dong Boyu , Lu Qichao , Ping Dianyuan , He Shuhong , Zhao Junhao , Cheng Tong , Li Yaxuan , Xing Sizhe , Jia Junlian , Shi Jianyang , Shen Chao , Li Ziwei , Chi Nan , Zhang Junwen
Published: May 2024

We demonstrate field trials of E/W-Band wireless transmission based on full-photonic up- and down-conversions, achieving 26.8-km wireless delivery of 32-Gb/s signal, 30.4-km of 22-Gb/s signal, and the largest net-rate-distance-product up-to 745.74 Gb/s·km per-channel.
High-Power O-band QD Booster Amplifier for Uncooled Operation
Authors: Poltavtsev S.V. , Rautert J. , Mikhrin V.S. , Mikhrin S.S. , Gubenko A.E. , Kovsh A.R.
Published: May 2024

The performance of a high-power single-mode InGaAs QD-based BOA providing 28dBm of output saturation power in 25÷85°C temperature range is presented. The studied BOA is targeted for 1.3μm LIDAR applications working in uncooled regime.
Real-Time In-Line Coherent Distributed Sensing over a Legacy Submarine Cable
Authors: Mazur Mikael , Fontaine Nicolas K. , Ryf Roland , Pilgrim Philip , Chodkiewicz Tracy , Sosa Gonzalo , Carter Stephen D. , Jasso Sergio Velazquez , Naik Jeewan , Padmaraju Kishore , Mistry Ajay , Winter David , Dallachiesa Lauren , Chen Haoshuo , Neilson David T.
Published: May 2024

We demonstrate an inband real-time C-OFDR distributed acoustic sensing system over ≈2000 km (NZ-DSF) submarine cable without Bragg-reflector loopbacks. We achieve 2 ms update for phase and ≈200m spatial resolution with zero induced penalty on live transceivers.
First Demonstration of 200-G Coherent PON at O-band with Heterogeneously-Integrated SiP Tx and Rx with Lasers
Authors: Zhang Jinsong , Wei Zixian , Misak Stephen , Wissing Aaron , Liu Junqian , Andrade Hector , Maharry Aaron , Gilardi Giovanni , Kumar Ranjeet , Su Guan-Lin , Liu Ansheng , Akulova Yuliya , Buckwalter James F. , Saleh Adel A. M. , Coldren Larry , Schow Clint L. , Plant David V.
Published: May 2024

We demonstrate the first 200-G O-band coherent PON using a heterogeneously-integrated SiP PIC transmitter as an OLT and PIC/EIC receivers as ONUs. A joint DSCM and NOMA scheme is presented for flexibly dense access scenarios.
Optical and THz Broadband Integrated Circuits for Mode-Dependent Free-Space Communications
Authors: Willner Alan E.
Published: May 2024

Integrated circuits may be important role in future mode-dependent free-space communications. This presentation will describe broadband optical and THz structures that can generate data-carrying beams on unique spatial modes. One example is tunable pixel-array-based metasurfaces.
Monolithically integrated magneto-optical isolators, circulators and phase shifters on SiN photonics
Authors: Bi Lei , Yan Wei , Yang Yucong , Wei Zixuan , Wu Di , Zhang Zijian , Song Xiaoyi , Qin Jun
Published: May 2024

We report monolithically integrated magneto-optical isolators, circulators on SiN with 30 dB isolation ratio, -28 dB cross-talk, 54 nm 20 dB isolation bandwidth, and 2.7 dB insertion loss. Compact magneto-optical phase shifter arrays with VπL=0.3 V·cm were also developed, allowing the development of MHz speed optical phased arrays on SiN.
A Co-planar Stripline Mach-Zehnder Modulator Enabling 160 GBd PAM-4 on an Indium Phosphide Platform
Authors: Hillier James Arthur , Hu Qian , Chen Haoshuo , Meighan Arezou , Augustin Luc , Wale Michael , Williams Kevin , Yao Weiming
Published: May 2024

Large signal measurements are undertaken on electro-optic Mach-Zehnder modulators using a co-planar-stripline design, realised for the first time on a generic InP platform, demonstrating a 320 Gbit/s line rate with a bit error rate of 1.62×10-2.
Record length of 2000 km weakly-coupled 7-core MCF produced from a single large-scale MCF preform
Authors: Tiess Tobias , Lorenz Michael , Lee Jong-Won , Schmitt Maximilian , Beavers Jimmy E. , Green Evan P. , Andersen Nicolaj L. , Samson Andreas C. , Andersen Frederik N. , Cwalina Sarah , Habel Kai , Ma Qiulin , Böttcher Martin , Schuster Kay
Published: May 2024

We present the design and fabrication of more than 2000 km of a 7-core multi-core fiber (MCF) drawn from a single large-scale MCF preform. The fiber was fabricated without any online fiber breaks and exhibits axially excellent geometrical conformity. First fiber measurements are discussed. This work demonstrates the upscaling potential to pave the way for cost-efficient MCF production.
Power Resilient, Air-Gap Multi-Core Fiber with >20 W Fiber Fuse Propagation Threshold per Core
Authors: Mehta Aditi , Mukasa Kazunori , Takagi Takeshi , Zahidy Mujtaba , Liu Yaoxin , Dalgaard Kjeld , Rottwitt Karsten , Galili Michael , Oxenløwe Leif Katsuo , Morioka Toshio
Published: May 2024

We measured fiber fuse properties of FMFs, coupled/uncoupled MCFs, and novel air-gap MCFs. We found that air-gap MCFs have fiber fuse propagation threshold of more than 20 W owing to efficient heat diffusion into air.
Enabling Endogenous DAS in P2MP Digital Subcarrier Coherent Transmission System with Enhanced Frequency Response
Authors: Hu Zihe , Zhao Can , Chen Yizhao , Zhang Mingming , Chen Junda , Li Weihao , Zhao Luming , Tang Ming
Published: May 2024

We propose an endogenous DAS in P2MP digital subcarrier coherent transmission systems. By redesigning and reusing FrFT-based synchronization pilots, vibrations up to 12 kHz are successfully detected over 10-km-long fiber, along with 100-Gb/s 16QAM transmission.
Anomaly Detection and Localization in Optical Networks Using Vision Transformer and SOP Monitoring
Authors: Abdelli K. , Lonardi M. , Gripp J. , Correa D. , Olsson S. , Boitier F. , Layec P.
Published: May 2024

We introduce an innovative vision transformer approach to identify and precisely locate high-risk events, including fiber cut precursors, in state-of-polarization derived spectrograms. Our method achieves impressive 97% diagnostic accuracy and precise temporal localization (6-ms- RMSE).
High-bandwidth GaN Substrate Single-Pixel Blue Micro-LED Toward 10 Gbps Visible Light Communication
Authors: Rao Zhiwei , Shan Xinyi , Liao Yue , Jin Zuxin , Lin Runze , Cui Xugao , Liu Ran , Tian Pengfei
Published: May 2024

A record data rate of 10.009 Gbps at a distance of 0.55 m based on a single c-plane freestanding GaN micro-LED was achieved by using OFDM modulation and a bit-loading algorithm.
DC–226 GHz well-impedance-matched high-speed photoreceiver for multi-band signal detection
Authors: Umezawa T. , Dat P. T. , Yoshida Y. , Nakajima S. , Matsumoto A. , Akahane K. , Kanno A. , Yamamoto N.
Published: May 2024

We designed and fabricated a well-impedance-matched ultrabroadband photoreceiver operating beyond 226 GHz and discussed its high data rate multiband performance from the baseband to the W-, D-, and G-bands.
Real-time transmission of 34.9 Tb/s with 1-Tb/s channels over 4800 GHz-wide C-band along 1000 km of G654E fiber
Authors: Lavigne B. , Le Monnier M. , Zami T. , David J. , Weisser S. , Raddatz L. , Pulka F.
Published: May 2024

We transmit 34.9 Tb/s over the 4800 GHz-wide C-band through ten 100km-long G654E fiber spans. This is a record spectral efficiency with real-time 1-Tb/s 128-GBaud transponder and pure Erbium-doped-fiber-based amplification along 1000km core/regional distance.
150.27-Tb/s Capacity over 150-km in S+C+L Band Using 156-Channel 115-GBaud Signals with Doped Fiber Amplification
Authors: He Qingyu , Ge Dawei , Luo Ming , Zhang Xu , Wu Yan , Mei Liang , Du Ping , Wang Dong , Zhang Hongguang , Li Han , Xiao Xi
Published: May 2024

We demonstrate a 150.27-Tb/s S-, C- and L-band optical signal over 150-km G.654.E transmission in a 19.5-THz bandwidth with only DFAs. The average per-wavelength capacity is over 960-Gbit/s after entropy optimization in each band.
Low-Latency Upstream Scheduling in Multi-Tenant, SLA Compliant TWDM PON
Authors: Ganguli Arijeet , Ruffini Marco
Published: May 2024

We present a multi-tenant multi-wavelength upstream transmission scheme for virtualised PONs, enabling compliance with latency-oriented Service Level Agreements (SLAs). Our analysis highlights an important trade-off between single-channel vs. multi-channel PONs, depending on ONUs tuning time.
Field Implementation of Fiber Cable Monitoring for Mesh Networks with Optimized Multi-Channel Sensor Placement
Authors: Ji Philip N. , Ye Zilong , Wellbrock Glenn , Xia Tiejun , Huang Ming-Fang , Aono Yoshiaki , Wang Ting
Published: May 2024

We develop a heuristic solution to effectively optimize the placement of multi-channel distributed fiber optic sensors in mesh optical fiber cable networks. The solution has been implemented in a field network to provide continuous monitoring.
Highly rectangular SCL-band MUX/DEMUX filter using compact cascaded arrayed waveguide gratings
Authors: Ota Masashi , Suzuki Kenya , Yamaguchi Keita , Umeki Takeshi , Katayose Satomi , Moriwaki Osamu
Published: May 2024

We propose a small-footprint arrayed-waveguide grating (AWG) design method in which an arrayed waveguide area serves as an evaluation metric and report a 170-nm-wide and highly rectangular waveband MUX/DEMUX filter using compact cascaded AWGs.
Estimation and Localization of DGD Distributed Over Multi-Span Optical Link by Correlation Template Method
Authors: Hahn Choloong , Chang Junho , Jiang Zhiping
Published: May 2024

We propose a longitudinal DGD monitoring technique based on correlation template method at Rx-DSP. Estimation and localization of distributed DGD profile over 12×75 km-long SSMF span link are experimentally demonstrated with errors below 1 ps.
21.9 THz-wide Ytterbium Doped Fiber Amplifier for 1 µm Data Transmission
Authors: Huang Xin , Liang Sijing , Xu Lin , Richardson David J. , Jung Yongmin
Published: May 2024

We present an ultra-wideband ytterbium-doped fiber amplifier optimized for 1 µm data transmission, providing a remarkable 21.9 THz bandwidth (1025-1110 nm), with >20 dB average gain and <5.1 dB noise figure.
Holographic Optical Storage for the Cloud?
Authors: Brennan Grace , Cheriere Nathanael , Chu Jiaqi , Gladrow Jannes , Kelly Douglas , Maltese Giorgio , Narayanan Dushyanth , O’Shea Greg , Sanders Alan , Wu Xingbo , Yang Mengyang , Thomsen Benn
Published: May 2024

We assess the performance and energy efficiency of an end-to-end Holographic optical storage system to determine if this technology can cost effectively solve the access rate challenges in online cloud storage applications.
Frequency-Comb-Enabled Photonic RF Memory for Multi-False-Target Radar Compound Jamming
Authors: Xu Kai , Li Xinghan , Li Hongyu , Cheng Mengfan , Yang Qi , Tang Ming , Liu Deming , Deng Lei
Published: May 2024

We report the first all-optical multi-false-target radar jamming scheme using frequency-comb-enabled photonic RF memory. More than 10 false targets with range-velocity deception information are obtained, with storage time exceeding 840μs and signal frequency reaching 16GHz.
Optical Transport Networks Converging Edge Compute and Central Cloud: An Enabler For 6G Services
Authors: Tzanakaki A. , Anastasopoulos M. , Alevizaki V.-M.
Published: May 2024

Intent-based networking that automates the operation of converged edge compute and central cloud 6G infrastructures through optical transport networks is proposed. GPT AI is used to translate high level intents to optical transport network configurations.
Heterogeneously-Integrated Self-injection Locked Lasers on Thin Film Lithium Niobate
Authors: Li Mingxiao , Xiang Chao , Peters Jonathan , Guo Joel , Morin Theodore , Xue Shixin , Dumont Mario , Staffa Jeremy , Lin Qiang , Bowers John E.
Published: May 2024

We demonstrate a heterogeneously integrated self-injection locked lithium niobate laser via direct bonding. The single mode lasing power is as high as 16 mW with a side mode suppression ratio over 50 dB.
128 GBaud Coherent Receiver Engine with Flat Frequency Response
Authors: Gläsel Jonas , Schindler Alexander , Boerma Hendrik , Tran Thanh T. , Ganzer Felix , Nguyen Duy P. , Allen Billy , Runge Patrick , Schell Martin
Published: May 2024

We demonstrate a high responsivity intradyne coherent receiver engine with 80 GHz bandwidth. A co-design of the InP waveguide integrated coherent photodetector and the dual linear SiGe transimpedance amplifier results in a flat frequency response. A system evaluation at 128 GBaud shows the capability for QPSK and 16QAM.
Improving FFE Performance by an Error Decorrelation Algorithm
Authors: Stojanović Nebojša , Calabrò Stefano , Youxi Lin , Wettlin Tom Jonas , Rahman Talha , Kuschnerov Maxim
Published: May 2024

Two error decorrelation algorithms with negligible complexity and latency are developed to improve noise statistics after feed-forward equalizers. Performance improvement is demonstrated in simulations and experiments.
A Low-Cost Network Architecture Enabled by SOA-Based Filter-less OADMs and Digital Subcarrier Multiplexing
Authors: Castro Carlos , Xia Shiyi , Napoli Antonio , Pedro João , Rumaldo Yesica , Costa Nelson , Calabretta Nicola , Spinnler Bernhard , Rafel Albert
Published: May 2024

Enabled by digital subcarrier multiplexing and filter-less architectures based on semiconductor optical amplifiers, our point-to-multipoint scheme can cover distances of up to 350 km with OSNR margins > 9.3 dB in typical BT horseshoe networks.
Machine Learning-Driven Low-Complexity Optical Power Optimization for Point-to-Point Links
Authors: Andrenacci Isaia , Lonardi Matteo , Ramantanis Petros , Awwad Élie , Irurozki Ekhiñe , Clémençon Stephan , Serena Paolo , Lasagni Chiara , Bigo Sébastien , Layec Patricia
Published: May 2024

We propose a strategy to dynamically adjust transmitted power solely based on the analysis of performance fluctuations due to polarization-dependent loss. We show that our method converges faster to optimum compared to a standard approach.
Broadband Transmission Opto-mechanical Switch Based on Cylindrical Ferrule Rotation Switching Using Fiber Bundle Inserted in Ferrule
Authors: Fukai Chisato , Uematsu Takui , Koyama Ryo , Ogushi Ikutaro , Katayama Kazunori
Published: May 2024

We demonstrate an opto-mechanical switch based on rotation of a ferrule holding a fiber bundle. Excellent loss and reflection characteristics comparable with those of optical connectors are achieved in the telecommunication wavelength bands.
Comparison of FEC Design Concepts for Higher Error Correction Performance with Utilizing Turbo Product Code
Authors: Koganei Yohei , Sugitani Kiichi
Published: May 2024

We investigate several FEC design concepts to enhance a turbo product code with higher overhead ratios. The result illustrates which concept would be effective to obtain higher performance according to the increase of the overhead.
A Grating Coupler With High Coupling Efficiency and Large Bandwidth for Silicon-on-Insulator Technology
Authors: Schweikert Christian , Nau Simon , Hoppe Niklas , Vogel Wolfgang , Berroth Manfred , Rademacher Georg
Published: May 2024

Conventional grating couplers show a tradeoff between low-loss and broadband operation. By using the interference of counter-propagating waves, we demonstrate a grating coupler design with a simulated coupling efficiency-1dB-bandwidth product of 77 nm.
In-service simultaneous monitoring of transceiver and channel impairments in DSCM systems without impairments compensation
Authors: Fan Linsheng , Yang Yanfu , Zhang Qun , Gong Siyu , Tang Jianwei , Li Xueyang , Cheng Chen , Jin Yongchao , Yao Yong
Published: May 2024

In-service simultaneous transceiver and channel impairments monitoring scheme is proposed and experimentally verified in dual-polarization DSCM system. The monitoring scheme is based on frequency-domain pilot tones and involves no impairments compensation.
Direct Radio Frequency Modulation of Quantum Cascade Lasers for mid-IR Applications
Authors: Dudzik Grzegorz , Frączek Wojciech , Jaworski Piotr , Krzempek Karol , Abramski Krzysztof
Published: May 2024

We present a QCL-based integrated laser module operating in the mid-IR range with direct modulation of RF signals up to 1.2 GHz and a miniaturized, fully functional electronic module for spectroscopic signal retrieval.
High Sampling Rate Arbitrary Waveform Generation in the Polarimetric Synthetic Dimension
Authors: Guan Yiran , Wang Guangying , Zhang Jiejun , Yao Jianping
Published: May 2024

High sampling rate arbitrary waveforms generated in the polarimetric synthetic dimension based on a fiber-optic system is proposed. A triangular, rectangular, and sawtooth waveform at a sampling rate of 80 GSa/s are experimentally generated.
Near-field Multi-source Localization and Signal Enhancement for Fiber-optic DAS
Authors: Chen Junfeng , Ai Ke , Li Hao , Fan Cunzheng , Yan Zhijun , Sun Qizhen
Published: May 2024

The near-field multi-source localization and enhancement based on array signal processing (ASP) method are proposed for the distributed acoustic sensing (DAS), and it has been demonstrated with high positioning accuracy and great signal enhancement.
High Bandwidth (>35GHz) 1060nm Single-mode Transverse Coupled-cavity VCSEL Array for Single-mode Fiber Transmission
Authors: Ibrahim Hameeda R. , Ge Chang , Gu Xiaodong , Padullaparthi Babu D. , Koyama Fumio
Published: May 2024

We demonstrate 8ch-1060nm single-mode metal-aperture VCSEL array, exhibiting bandwidth >35GHz, single-mode power of 4mW and error-free 60Gbaud transmission through 2km-single-mode fiber(G.652). Also, uncooled operations up to 85℃ with 50Gbps-NRZ and 100Gbps-PAM4 through 2km-SMF are demonstrated.
CPRI-equivalent Data Rate of 3.12 Tbps 16384QAM DSM 300GHz Terahertz Wave Signals over Hollow-core Fiber
Authors: Yang Xiongwei , Yu Jianjun , Li Weiping , Wang Chen , Zhou Wen , Wang Kaihui , Bian Chengzhen , Wei Yi , Wang Mingxu , Zhang Qiutong , Wu Ying , Liu Bo , Zhao Xianming , Ding Junjie , Zhang Jiao , Zhu Min , Yu Jianguo , Zhao Feng
Published: May 2024

We experimentally demonstrate ultra-large-capacity hybrid fiber and THz-Wave wireless fronthaul over 2-km hollow-core fiber and 2-m wireless distance based on 80 channel WDM and DSM, achieving CPRI-equivalent data rate of 3.12 Tbit/s.
A 4×112Gbps Compact Polarization-Insensitive Silicon Photonic WDM Receiver
Authors: Xue Jintao , Wu Jinyi , Cheng Chao , Zhang Wenfu , Wang Binhao
Published: May 2024

A 4×112Gbps polarization-insensitive silicon photonic WDM receiver with a two-dimensional grating coupler, cascaded dual-ring filters and bidirectional photodiodes is demonstrated. A polarization-dependent loss of 0.45dB is achieved.
Cascadability of PPLN-Based Inter-Band Wavelength Conversion for Band-Switchable Multi-Band Optical Cross-Connect
Authors: Minami Haruka , Fukatani Takafumi , Nakagawa Masahiro , Seki Takeshi , Shimizu Shimpei , Kobayashi Takayuki , Kazama Takushi , Enbutsu Koji , Umeki Takeshi , Hayashi Rie , Kuwahara Takeshi
Published: May 2024

A band-switchable multi-band optical cross-connect can contribute flexible operation of future multi-band networks. We review an experimental demonstration for cascadability of PPLN-based inter-band wavelength converters with a view to incorporating them into the optical cross-connect.
Dynamic Asymmetric SC Allocation and Reconfiguration in Drop-and-Continue Optical Networks based on P2MP-TRXs
Authors: Li Ruoxing , Li Sijia , Wu Meihan , Zhang Yuxiao , Lv Qian , Zhu Zuqing
Published: May 2024

We study the dynamic service provisioning in drop-and-continue optical networks based on point-to-multipoint transceivers (P2MP-TRXs), and leverage asymmetric subcarrier (SC) allocation and SC-level reconfiguration to optimize resource utilization with low operational complexity.
Employing Fiber Loss Degradation Statistics in SLA based Margin Calculation Method for Optical Networks
Authors: Zhai Zhiqun , Dou Liang , Chen Sai , Zhang Huan , Xie Chongjin
Published: May 2024

We present a statistical analysis of fiber loss degradation with data from a live production network. A proper model is proposed to investigate system margins under typical scenarios with different operation conditions.
Using P2MP Transceivers as Regenerators in Disaggregated and Multi-Rate Regional Optical Networks
Authors: Gumaste Ashwin , Pedro João , Napoli Antonio , Bhyri Sai Kishore , Wakim Walid
Published: May 2024

We investigate the role of point-to-multipoint (P2MP) transceivers as regenerators in multi-rate regional optical networks. By smart placement of P2MP devices, we are able to reduce transceiver count by 29% and free up spectral resources.
Subcarrier-Enabled Record Field Trial Demonstration in a Dispersion Uncompensated Ultra-Long Transpacific Cable
Authors: Edirisinghe Sumudu , Varughese Siddharth , Lavery Domaniç , Mertz Pierre , Sun Han
Published: May 2024

A record real-time transmission is demonstrated over an 18,008 km dispersion uncompensated subsea cable, enabled by subcarrier-based EEPN mitigation and FEC. Numerical analysis supports the field trial’s real-time measurements, quantifying the benefit of subcarrier modulation.
Low-Complexity Experimental Model for Submarine Link Performance Prediction
Authors: de Araujo Juliana Tiburcio , Meseguer Alexis Carbo , Antona Jean-Christophe
Published: May 2024

We propose a low-complexity experimental model that predicts the OSNR of submarine links, considering both EDFA homogeneous and inhomogeneous responses. We tested it with random input pre-emphases, obtaining a mean RMSE of 0.29 dB after 24 spans when trained with simple single-span datasets.
QoT Estimation for Large-scale Mixed-rate Disaggregated Metro DCI Networks by Artificial Neural Networks
Authors: He Yan , Chandramouli Kausthubh , Zhai Zhiqun , Chen Sai , Dou Liang , Xie Chongjin , Lu Chao , Lau Alan Pak Tao
Published: May 2024

We proposed an artificial neural network (ANN)-based QoT estimator for large-scale mixed-rate disaggregated metro DCI networks with an estimation error standard deviation of 0.3 dB, outperforming analytical-based methods with vendor-specific transponder SNR characterization.
U-Band Transmission Characteristics over Standard Cladding Step-Index 4-Core Fiber Span
Authors: Soma Daiki , Kato Tomoyuki , Beppu Shohei , Elson Daniel J. , Muranaka Hidenobu , Irie Hiroyuki , Okada Shun , Tanaka Yu , Wakayama Yuta , Yoshikane Noboru , Hoshida Takeshi , Tsuritani Takehiro
Published: May 2024

We evaluate the optical and transmission characteristics of a step-index four-core fiber with a standard cladding diameter in the U-band. Transmission over 57 km is demonstrated by applying a bidirectional architecture to suppress the crosstalk.
Design guideline for unrepeatered counter-propagating multi-core fiber link
Authors: Matsui Takashi , Sakamoto Taiji , Wada Masaki , Nakajima Kazuhide
Published: May 2024

We revealed that crosstalk influence in unrepeatered counter-propagating multi-core fiber link could be minimized at optimum gain and position of remote-optically pumped amplifier (ROPA). 1.5-times longer unrepeatered link was obtained by implementing isolators with ROPA.
Development of Four-Core MCFs with Standard Cladding Diameter from High-Core-Count MCFs
Authors: Aikawa Kazuhiko , Oda Takuya , Kajikawa Shota , Ozaki Kohei , Iizuka Mayu , Takenaga Katsuhiro , Nishimura Akito , Ichii Kentaro
Published: May 2024

We developed multiple-core filters (MCFs) with more than 30 cores and conducted transmission tests. Currently, we aim to commercialize four-core MCFs with a standard cladding diameter by conducting trials using MCF cables, and related technologies.
High-Density Weakly-Coupled 4-core MCF with 160-μm Coating for O-band Application
Authors: Kajikawa Shota , Iizuka Mayu , Oda Takuya , Takenaga Katsuhiro , Ichii Kentaro
Published: May 2024

We developed weakly coupled 4-core multi-core fiber with 100-μm cladding and 160-μm coating suitable for O-band applications, which achieves an impressive core density of 9.8 times higher than that of conventional single-core fiber.
Photonic Frequency Hopping Driven by High-Speed Wavelength Tunable Laser for Secure Terahertz-wave Communication
Authors: Ye Shenghong , Masutomi Naoto , Li Bo , Matsumoto Ryo , Kaide Ryota , Tang Haolan , Kamiura Yoshiki , Che Ming , Mikami Yuya , Ueda Yuta , Kato Kazutoshi
Published: May 2024

We proposed a photonic frequency-hopping physical-secure Terahertz-wave communication system driven by a high-speed wavelength tunable laser and a photomixer, and experimentally demonstrated a frequency-hopping time of less than 25 ns at 300-GHz band.
Broadband InGaAs mHEMT THz Transmitters and Receivers
Authors: John Laurenz , Thome Fabian , Leuther Arnulf , Tessmann Axel
Published: May 2024

We describe THz amplifier and front-end modules that have been developed based on an InGaAs metamorphic HEMT (mHEMT) technology for THz-wireless communication applications around 300 GHz, covering the frequency range between 270 and 330 GHz and enabling record output-power levels above 10 dBm. Furthermore, we report on the development of state-of-the-art distributed mHEMT circuits with absolute bandwidths in excess of 300 GHz as building block of next-generation ultra-broadband THz front ends.
A 100 W Output Power Coherent Transmission Link for Future High Data Rate Earth-to-Satellite Communication
Authors: Horst Yannik , Kulmer Laurenz , Blatter Tobias , Winiger Joel , Billault Vincent , Dandé Guénolé , Bourderionnet Jérome , Brignon Arnaud , Maho Anaelle , Welch Matthew , Koepfli Stefan M. , Leuthold Juerg
Published: May 2024

An optical coherent transmission link with 100Watt output power is tested for satellite communications. Modulation formats are tested for transmission of the highest data-rates despite of nonlinear amplifier impairments across a linear, low-SNR free-space link.
Advances in Thin-Film Lithium Niobate Photonics for Datacom Applications
Authors: Xu Mengyue
Published: May 2024

We review recent developments in thin-film lithium niobate photonics to enable high-capacity and energy-efficient optical integration solutions for next-generation datacom.
AI-based Automation of Multi-layer Multi-domain Transport Networks
Authors: de Dios O. Gonzalez , Armingol-Robles P. , Roelens- L. , Muñiz-Da-Costa A. , Fernández-Palacios J.P.
Published: May 2024

With increasing demand for customized connectivity, transport networks must evolve towards an autonomous and customer-driven network management. In this paper we describe a AI-based data-driven control architecture to support end-to-end automated slicing in multi-layer networks.
Towards Explainable Reinforcement Learning in Optical Networks: The RMSA Use Case
Authors: Ayoub Omran , Natalino Carlos , Monti Paolo
Published: May 2024

We propose an approach to extract explanations from a trained reinforcement learning agent. Our analysis over three RMSA environment variations shows how the agent uses the input information, increasing our understanding of its learned policy.
Single-End Crosstalk Measurement Method for Multi-Core Fibers Using Continuous Light Source
Authors: Yamaguchi Yuto , Inoue Ayumi , Kikuchi Takahiro , Nagashima Takuji , Tazawa Hidehisa , Hayashi Tetsuya
Published: May 2024

We propose multi-core fiber (MCF) crosstalk measurement method which requires only one fan-in/fan-out at a single end of MCF, and is applicable to short MCFs whose crosstalk is difficult to be measured using OTDR method.
96-Core MPO-APC Connector using 4-core fiber with SMF Standard Insertion Loss Grade
Authors: Haji Kohei , Saito Yuki , Toyokawa Shuhei , Mouri Shintaro , Morishima Tetsu
Published: May 2024

We developed 96-core MCF-MPO connector with 8-degree angled endface. Fabricated connectors achieved 0.12 dB average insertion loss and all core PC, and passed Telcordia GR 1435-CORE Durability and Humidity Condensation Cycling Test.