bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of compact off-axis freeform imaging systems based on optical-digital joint optimization
Authors: Yang Tong , Xu Huiming , Cheng Dewen , Wang Yongtian
Published: May 2023

Using a freeform optical surface can effectively reduce the imaging system weight and volume while maintaining good performance and advanced system specifications. But it is still very difficult for traditional freeform surface design when ultra-small system volume or ultra-few elements are required. Considering the images generated by the system can be recovered by digital image processing, in this paper, we proposed a design method of compact and simplified off-axis freeform imaging systems using optical-digital joint design process, which fully integrates the design of a geometric freeform system and the image recovery neural network. This design method works for off-axis nonsymmetric system structure and multiple freeform surfaces with complicated surface expression. The overall design framework, ray tracing, image simulation and recovery, and loss function establishment are demonstrated. We use two design examples to show the feasibility and effect of the framework. One is a freeform three-mirror system with a much smaller volume than a traditional freeform three-mirror reference design. The other is a freeform two-mirror system whose element number is reduced compared with the three-mirror system. Ultra-compact and/or simplified freeform system structure as well as good output recovered images can be realized.
Optical absorption of bismuthene with a single vacancy: first-principle calculations
Authors: Li Zongsheng , Ma Xiaoyang , Pan Han , Chu Hongwei , Pan Zhongben , Li Ying , Zhao Shengzhi , Li Dechun
Published: May 2023

The exceptional mechanical, electronic, topological, and optical properties, make bismuthene an ideal candidate for various applications in ultrafast saturation absorption and spintronics. Despite the extensive research efforts devoted to synthesizing this material, the introduction of defects, which can significantly affect its properties, remains a substantial obstacle. In this study, we investigate the transition dipole moment and joint density of states of bismuthene with/without single vacancy defect via energy band theory and interband transition theory. It is demonstrated that the existence of the single defect enhances the dipole transition and joint density of states at lower photon energies, ultimately resulting in an additional absorption peak in the absorption spectrum. Our results suggest that the manipulation of defects in bismuthene has enormous potential for improving the optoelectronic properties of this material.
Fully Passive Integrated-optic Chromatic Dispersion Compensator and its Use to PAM4 Signal Compensation
Authors: Takiguchi Koichi
Published: May 2023

We report an integrated-optic chromatic dispersion compensator without any adjustment parts. The compensator comprises two arrayed-waveguide gratings and 100 fixed delay lines and was used to compensate for 80 Gbit/s pulse amplitude modulation signal distortion.
Athermal Silicon Photonic Wavemeter with Wide Temperature Range
Authors: Stern Brian , Kim Kwangwoong , Gariah Harry , Bitauld David
Published: May 2023

We demonstrate a silicon photonic wavemeter with high accuracy for broadband measurements over a large temperature range of 20-60˚C. The integrated wavemeter reaches a mean error of 11 pm over an 80 nm span.
64-channel fiber-optic ultrasound detector array with high sensitivity for photoacoustic imaging
Authors: Wang Anqi , Yang Liuyang , Xu Dongchen , Chen Geng , Dai Chenhao , Sun Qizhen
Published: May 2023

We present a 64-channel fiber-optic ultrasound detector array with high sensitivity. The sensor can exhibit an NEP of 0.64 kPa and a wide bandwidth about 47 MHz, which gives a favorable resolution of photoacoustic imaging.
Photonic Micro-Ring Tensor Core for Parallel and Shared Batch Processing
Authors: Jiang Yue , Zhang Wenjia , Liu Xuying , He Zuyuan
Published: May 2023

We propose and experimentally demonstrate a batch dimension processing scheme based on the micro-ring weighting bank, which can at least quadruple the computing capability of the photonic tensor core without extra weighting units and power consumption.
Power Efficient Coherent Detection for Short-Reach System
Authors: Zhang Hongbin
Published: May 2023

Faster-than-Nyquist QPSK based on symbol-rate DSP can maximize the link loss budget and enable a single laser solution and low-power driver design in 1.6 Tb/s DR4 short-reach systems.
DSP-Free Frequency Stabilized DCI Coherent Fiber Links Operating at 5.4Tbps 15λx90G-16QAM, 330G 72G-32QAM, and 336G 56G-64QAM
Authors: Harrington Mark W. , Brodnik Grant M. , Isichenko Andrei , Liu Kaikai , Briles Travis C. , Papp Scott B. , Blumenthal Daniel J.
Published: May 2023

We demonstrate a 5.4 Tbps (90G-16QAMx15λ) DSP-free WDM coherent link and compare performance to single-λ 360G 72G-32QAM and 56G-64QAM coherent links over 100m using an integrated coil-resonator-stabilized Brillouin-laser-pumped integrated Kerr-comb.
Self-Homodyne Coherent Systems for Short-Reach Optical Interconnects
Authors: Tang Ming
Published: May 2023

Self-homodyne coherent detection scheme is promising for short-reach optical interconnect for its significantly reduced complexity and compatibility with legacy coherent infrastructure without sacrificing spectral efficiency. Solutions towards practical use are presented here with future perspectives.
A 200Gb/s QAM-16 Silicon Photonic Transmitter with 4 Binary-Driven EAMs in An MZI Structure
Authors: Talkhooncheh Arian Hashemi , Zilkie Aaron , Yu Guomin , Shafiiha Roshanak , Emami Azita
Published: May 2023

A DAC-less 200Gb/s QAM-16 transmitter in a multi-micron silicon-photonics platform using 4 binary-driven SiGe EAMs in an unbalanced MZI is presented. The transmitter exhibits bit-error rates of 3×10-4 and 2.8×10-4 for square and hexagonal constellations.
Beyond 200-GBd QAM Signal Detection Based on Trellis-path-limited Sequence Estimation Supporting Soft-decision Forward Error Correction
Authors: Nakamura Masanori , Taniguchi Hiroki , Yamamoto Shuto , Hamaoka Fukutaro , Nagatani Munehiko , Jyo Teruo , Mutoh Miwa , Shiratori Yuta , Wakita Hitoshi , Kobayashi Takayuki , Takahashi Hiroyuki , Miyamoto Yutaka
Published: May 2023

We proposed and experimentally demonstrated a trellis-path-limited sequence estimation method combining the log-likelihood ratio from minimum-mean-square-error equalizer-enabled signal detection with soft-decision -FEC decoding under severe bandwidth limitations, achieving 1.35-Tb/s 256-GBd 16QAM and 1.65-Tb/s 208-GBd 64QAM.
Implementation of a Robust and Power-Efficient Nonlinear 64-QAM Demapper using In-Memory Computing
Authors: Eldebiky Amro , Böcherer Georg , Schädler Maximilian , Calabrò Stefano , Li Bing , Schlichtmann Ulf
Published: May 2023

Analog in-memory computing reduces power consumption sacrificing computational accuracy. We implement multiplication-accumulation in resistive RAM accounting for non-idealities (variations, quantization, ADC noise). The floating-point performance is recovered while minimizing power consumption in offline 64-QAM experiments.
An Open Line System with Ultra-fast Protection Switching for Data Center Interconnect
Authors: Wang Juan , Jin Yu , Zhu Chen , Gao Feng , Cui Yongxin , Cheng Gang , Zhou Xu
Published: May 2023

We present a DCI OLS with 5ms ultra-fast protection switching. By optimizing the DSP traffic rebuild time with a magneto-optic switch, we are able to improve the current ITU standard by an order of magnitude.
A chip-based quantum access network without trusted relays
Authors: Xu Feihu
Published: May 2023

I will report our recent efforts towards the construction of a chip-based quantum access network using the measurement-device-independent protocols. This includes the recent experiments on Si chip-based QKD, high-rate QKD, twin-field QKD and all-photonic quantum repeater.
CV-QKD Receiver Platform Based On A Silicon Photonic Integrated Circuit
Authors: Piétri Yoann , Vidarte Luis Trigo , Schiavon Matteo , Grangier Philippe , Rhouni Amine , Diamanti Eleni
Published: May 2023

We report on the characterization of a SiGe PIC-based receiver along with its usage in a Gaussian-modulated coherent state CV-QKD setup. Excess noise measurements lead to secret key rate estimations of 280 kbit/s at 6.9 km.
Polarization-Encoded BB84 QKD Transmitter Sourced by a SiGe Light Emitter
Authors: Honz Florian , Vokić Nemanja , Walther Philip , Hübel Hannes , Schrenk Bernhard
Published: May 2023

We demonstrate a polarization-encoded BB84 transmitter sourced by a SiGe light source and show that such a potentially “all-silicon” QKD scheme can operate well below the QBER threshold at which secret keys can be established.
Ultra-Wideband Pulse Generation Based on Dispersion-Diversity Multicore Fiber
Authors: Ureña Mario , García Sergi , Gasulla Ivana
Published: May 2023

We experimentally demonstrate, for the first time, reconfigurable arbitrary waveform generation using a dispersion-diversity heterogeneous multicore fiber by synthesizing a variety of tunable high-order ultra-wideband pulses (up to 7 samples).
Photonic Max-Pooling for Deep Neural Networks Using a Programmable Photonic Platform
Authors: Ashtiani Farshid , On Mehmet Berkay , Sanchez-Jacome David , Perez-Lopez Daniel , Ben Yoo S. J. , Blanco-Redondo Andrea
Published: May 2023

We propose a photonic max-pooling architecture for photonic neural networks which is compatible with integrated photonic platforms. As a proof of concept, we have experimentally demonstrated the max-pooling function on a programmable photonic platform consisting of a hexagonal mesh of Mach-Zehnder interferometers.
Performance Requirements for FIFO-less Multicore Fibre Repeaters in Transatlantic-class Transmission
Authors: Elson Daniel J. , Wakayama Yuta , Yoshikane Noboru , Tsuritani Takehiro
Published: May 2023

We use the extended droop model to evaluate the performance requirements for SDM repeaters in transatlantic systems. The impact of repeater crosstalk on cable capacity is evaluated separately from fibre effects.
10-spatial-mode 1300-km Transmission over 6-LP Graded Index Few-Mode Fiber with 36-ns Modal Dispersion
Authors: Shibahara Kohki , Hoshi Megumi , Miyamoto Yutaka
Published: May 2023

We demonstrate record-long 10-mode-multiplexed transmission over 1300 km with 6-LP few-mode-fiber with modal dispersion coefficient of 157 ps/km. Modal-dispersion-unmanaged link was built by cyclic mode-group permutation, achieving reduction in modal dispersion accumulation by 82 %.
Partial MIMO-based Mode Division Multiplexing Transmission over the First Field-Deployed 15-Mode Fiber in Metro Scenario
Authors: Gatto Alberto , Parolari Paola , Luis Ruben S. , Rademacher Georg , Puttnam Benjamin J. , Emmerich Robert , Schubert Colja , Ferri Giuseppe , Achten Frank , Sillard Pierre , Martelli Paolo , Di Sciullo Giammarco , Graziosi Fabio , Marotta Andrea , Mecozzi Antonio , Antonelli Cristian , Boffi Pierpaolo
Published: May 2023

We assess mode division multiplexing transmission based on partial MIMO equalization over 6.1 km of the first deployed 15-mode fiber in L’Aquila, Italy. We demonstrate more than 13-Tb/s throughput with reduced receiver DSP resources.
Mode-Group-Division Multiplexing over a Deployed 15-Mode-Fiber Cable
Authors: Dallachiesa L. , Ryf R. , Fontaine N. K. , Mazur M. , Chen H. , Sillard P. , Ferri G. , Achten F. , Carena A. , Nespola A. , Marotta A. , Mecozzi A. , Antonelli C.
Published: May 2023

We experimentally demonstrate transmission over a subset of up to 4 spatial modes of a deployed 15-mode Graded-index Fiber Cable.
High-sensitivity Acoustic Impedance Sensing Using Forward Brillouin Scattering in Highly Nonlinear Fiber
Authors: Zeng Keyan , Wang Liang , Tang Ming , Liu Deming
Published: May 2023

High-sensitivity acoustic impedance sensing has been demonstrated for the first time by using radial acoustic modes induced forward Brillouin scattering in a highly nonlinear fiber. The measurement sensitivity has been improved to be 3.83MHz/[kg/(smm2)].
10-km Transmission of 106-Gb/s PAM4 with Directly Modulated DFB Lasers in the CWDM Range
Authors: Ohno Shuhei , Onga Masaru , Nakajima Takayuki , Nakanishi Akira , Sasada Noriko , Tanaka Shinichi , Nakajima Ryosuke , Naoe Kazuhiko
Published: May 2023

The 106-Gb/s PAM4 operation of four DMLs in the 1.3-μm CWDM range demonstrated < 2.0 dB TDECQ after 5-km transmission. Clear eye openings and BER below KP4-FEC limit (2.2 × 10−4) were achieved even after 10-km transmission.
Experimental Model of EDFA Spectral Hole Burning for WDM Transmissions Systems
Authors: de Araujo Juliana Tiburcio , Meseguer Alexis Carbo , Antona Jean-Christophe
Published: May 2023

We propose an empirical model to characterize the Spectral Hole Burning (SHB) of a chain of 200 EDFA in WDM transmission systems. Then we test it with 300 random input pre-emphases obtaining an average of root-mean-square error down to 0.5 dB.
Auxiliary Neural Network Assisted Machine Learning EDFA Gain Model
Authors: Lin Jiachuan , Lin Xiang , Jiang Zhiping
Published: May 2023

An enhanced EDFA model employing auxiliary neural networks is proposed. Adaptive to different devices, the model reduces the root mean square error from 0.04 to 0.02 dB with significantly less amount of training data.
Modeling of Nonlinear Distortion in Space-Division Multiplexing
Authors: Serena Paolo
Published: May 2023

We review the main models of space-division multiplexing transmissions in fiber optics working in the nonlinear regime, including perturbative modeling, the ergodic Gaussian noise model, and their implications on system analysis.
Edge-carrier-assisted Phase-Retrieval Based on Deep Learning Enabling low CSPR and low Applied Dispersion Values
Authors: Orsuti Daniele , Cappelletti Martina , Santagiustina Marco , Galtarossa Andrea , Palmieri Luca
Published: May 2023

We explore the use of deep learning to loosen the constraints and enhance the performance of weak-carrier-assisted phase-retrieval receivers. The applied-dispersion-value can be reduced by 4-times and the complexity by 50% with low sensitivity penalties.
Physics-Informed Neural Operator-based Full Wavefield Back-Propagation for Multi-span Optical Transmission
Authors: Song Yuchen , Jiang Xiaotian , Luo Xiao , Zhang Ximeng , Zhang Min , Wang Danshi
Published: May 2023

An unsupervised physics-informed neural operator-based wavefield back-propagation scheme is proposed, which enables the full wavefield information reconstruction along the link, nonlinearity compensation (0.46 dB Q-factor gain over 1StPS DBP), and fiber parameter identification.
QKD protocol over 100 km long submarine optical fiber assisted by a system-in-package fast-gated InGaAs single photon detector
Authors: Ribezzo Domenico , Zahidy Mujtaba , Petitjean Antoine , Lemmi Gianmarco , De Lazzari Claudia , Vagniluca Ilaria , Conca Enrico , Tosi Alberto , Occhipinti Tommaso , Cataliotti Francesco Saverio , Oxenløwe Leif K. , Xuereb André , Bacco Davide , Zavatta Alessandro
Published: May 2023

A QKD link established between Sicily (Italy) and Malta has been utilized to test the performances of a fast-gated InGaAs single photon detector, achieving a fourteen times higher key rate than using a commercial detector.
Secure Unrepeated Fiber Transmission with Quantum Deliberate Signal Randomization on Y-00 Protocol
Authors: Futami Fumio , Tanizawa Ken , Kato Kentaro , Kawaguchi Yuki , Sato Shin
Published: May 2023

We demonstrate security-enhanced 10-Gbit/s PSK Y-00 cipher transmission with deliberate signal randomization driven by a quantum random number generator in a 362 km ultra-low-loss fiber link without optical amplifiers. High security is achieved at high optical powers.
An Optoelectronic Analog Ising Machine Enabling 2048-Spin and Low-Latency Calculations
Authors: Chen Zihao , Li Zhenhua , Deng Zhaoang , Liu Jie , Yu Siyuan
Published: May 2023

An optoelectronic analog Ising machine is experimentally demonstrated. The SpMV algorithm is applied to accomplish two MAX-CUT tasks mapped into 2048-spin Ising networks, taking only 1.68μs per iteration.
Optoelectronic Neuromorphic Accelerator at 523.27 GOPS Based on Coherent Optical Devices
Authors: Zhu Ying , Zhang Xu , Hua Xin , Xu Lu , Hu Xiao , Luo Ming , Xiao Xi , Yu Shaohua
Published: May 2023

An integratable and scalable optoelectronic neuromorphic accelerator based on coherent optical devices is proposed and demonstrated. It can achieve the computing speed for convolutions of 523.27 GOPS and accuracy up to 96.67% for handwritten digit recognition as a neural network.
Artificial Intelligence Using Complex Photonics: Decision Making and Reservoir Computing
Authors: Uchida Atsushi
Published: May 2023

We overview recent development on photonic decision making and reservoir computing for artificial intelligence using complex photonics. Parallel implementations of photonic devices can accelerate information processing in decision making and reservoir computing.
Incoherent Fiber-based Optical Neuromorphic Computing Circuit
Authors: Yevnin Maya , Harel Alon , Arbel-Arenfrid Or , Zalevsky Zeev , Cohen Eyal
Published: May 2023

We present novel photonic neuromorphic computing scheme working with incoherent light while capable implementing negative weighting for the neural network and obtaining reliable/accurate computing of the linear multiply-accumulate function necessary for neural networks applications.
Unique Bending Loss Properties and Design Consideration for Coupled Multi-core Fiber
Authors: Imada Ryota , Sakamoto Taiji , Mori Takayoshi , Yamada Yusuke , Nakajima Kazuhide
Published: May 2023

We reveal the unique bending angle and coupled core count dependence of bending loss in a coupled multi-core fiber and demonstrate adequate core design conditions can be derived by considering the average bending loss property.
Characteristics of Over 600-km-Long 4-core MCF Drawn from a Single Preform
Authors: Kajikawa Shota , Saito Tsubasa , Takenaga Katsuhiro , Ichii Kentaro
Published: May 2023

This report presents details of the successful production of a 4-core MCF, with 125-μm cladding and a length greater than 600 km. This is the champion data for MCF length drawn from a single preform.
Optical Link Characteristics and Long-Term Stability of High-density Multi-Core Fiber Cables Deployed in the Terrestrial Field
Authors: Yamada Yusuke , MORI Takayoshi , Matsui Takashi , Kikuchi Masashi , Nakajima Kazuhide
Published: May 2023

The feasibility of a standard 125-m-cladding multi-core-fiber-based high-density terrestrial cable is described including long-term stability in an underground facility. The impact of a core-rotating splice on the link loss is also investigated.
Automatic setting of multiple FSO orthogonal communication channels between photonic chips
Authors: SeyedinNavadeh SeyedMohammad , Milanizadeh Maziyar , Zanetto Francesco , Grimaldi Vittorio , De Vita Christian , Ferrari Giorgio , Miller David A.B. , Melloni Andrea , Morichetti Francesco
Published: May 2023

Multiple orthogonal free-space optical (FSO) communication channels are automatically established between photonic chips hosting programmable integrated processors. All-optical channel demultiplexing is achieved with a crosstalk < -30 dB even after co-propagation though arbitrary mode mixers.
Free-Space Signal Transmission Using Optical Beam Scanning Device Incorporating Broadband Silicon Surface Optical Couplers
Authors: Atsumi Yuki , Yoshida Tomoya , Matsumoto Ryosuke , Konoike Ryotaro , Sakakibara Youichi , Inoue Takashi , Suzuki Keijiro
Published: May 2023

Characteristics of beam scanning device based on a broadband silicon vertically-curved-waveguide surface optical couplers are evaluated. We then demonstrate free-space transmission of 10-Gbps NRZ-OOK signals in the wide wavelength range from 1530 to 1590 nm.
Silicon-Based On-Chip Phase-Coded Linearly-Chirped Microwave Waveform Generation
Authors: Hong Xu , Wang Bin , Cheng Yihao , Zhang Weifeng
Published: May 2023

We propose and design a silicon photonic chip for phase-coded linearly-chirped microwave waveform generation based on optoelectronic oscillator. Using the chip, a phase-coded linearly-chirped microwave waveform with an ultra-large time-bandwidth product of 1.96×106 is experimentally demonstrated.
All-optical sub-THz signal generation using two mutually coupled semiconductor lasers
Authors: Tseng Chin-Hao , Liao Bin-Kai , Hwang Sheng-Kwang
Published: May 2023

This study proposes a novel all-optical approach for sub-THz signal generation. Sub-THz signals ranging from 100 to 300 GHz with a 3-dB linewidth below 2 kHz and a SPSR of about 47 dB are generated.
Conversion Gain Enhancement of a UTC-PD-Integrated HEMT Photonic Double-Mixer by High-Intensity Optical Subcarrier Signal
Authors: Nakajima D. , Nishimura K. , Watanabe M. , Lin T. T. , Kasai K. , Yoshida M. , Suemitsu T. , Otsuji T. , Satou A.
Published: May 2023

We experimentally investigate the effect of high-intensity subcarrier signal input to the UTC-PD-integrated HEMT working for optical-to-wireless carrier frequency down-conversion on enhancement of its double-mixing conversion gain. The fabricated UTC-PD-integrated HEMT demonstrated the linear increase in the conversion gain by up to +7 dB with increasing the subcarrier signal intensity without saturation, and the conversion gain enhancement of +6.8 dB from -51.0 dB to -44.2 dB was achieved.
Experimental Demonstration of 0.4-meter Ranging Through Underwater Scattering with 20-mm Resolution Using z- dependent Angular Rotation of a Spatially Structured Beam
Authors: Song Hao , Zhou Huibin , Duan Yuxiang , Jiang Zile , Ramakrishnan Muralekrishnan , Ko Wing , Wang Yingning , Su Xinzhou , Zou Kaiheng , Alhaddad Abdulrahman , Zeng Ruoyu , Bock Robert , Tur Moshe , Willner Alan E.
Published: May 2023

We experimentally demonstrate a 0.4-meter underwater optical ranging with a 20-mm resolution through underwater scattering (extinction coefficient γ up to 9.4 m‐1) utilizing the z-dependent angular rotation of a spatially structured beam.
Telemetry Framework with Data Sovereignty Features
Authors: Shariati B. , Qarawlus H. , Biehs S. , Pedreno-Manresa J.-J. , Safari P. , Balanici M. , Bouchedoub A. , Haße H. , Autenrieth A. , Fischer J. K. , Freund R.
Published: May 2023

We propose a novel framework that enables data ecosystem and regulated telemetry streaming in open and disaggregated optical networks. We review its requirements, present its architecture, and discuss two demonstrated use-cases in our testbeds.
Failure Data Augmentation for Optical Network Equipment Using Time-series Generative Adversarial Networks
Authors: Xing Cheng , Zhang Chunyu , Ye Bing , Wang Danshi , Jia Yinqiu , Li Jin , Zhang Min
Published: May 2023

We propose a failure data augmentation scheme based on time-series generation adversarial networks with real equipment performance data of optical networks and verify that the augmented failure sample data is similar to real failure data.
Automation of Fast Configuration Error Diagnosis in Optical Transport Networks – Natural Language Processing is All You Need
Authors: Wang Cen , Yoshikane Noboru , Elson Daniel , Tsuritani Takehiro
Published: May 2023

We train language models to automate the diagnosis of OTN configuration errors, and the diagnostic accuracy is up to 97.56%. We additionally demonstrate the effectiveness of the models on a real OTN system.
Monolithically Integrated Autonomous Demultiplexers with Near Zero Power Consumption for Beyond Tb/s Links
Authors: Pirmoradi Ali , Aflatouni Firooz
Published: May 2023

Integrated multiplexer/de-multiplexer systems based on capacitively tuned MZI and adiabatic ring resonators with sequential tuning and wavelength locking are presented.
A Direct Bond Interconnect 3D Co-Integrated Silicon-Photonic Transceiver in 12nm FinFET with -20.3dBm OMA Sensitivity and 691fJ/bit
Authors: Samanta Anirban , Chang Po-Hsuan , Yan Peng , Fu Mingye , Berkay-On Mehmet , Kumar Ankur , Kang Hyungryul , Yi Il-Min , Annabattuni Dedeepya , Zhang Yu , Scott David , Patti Robert , Fan Yang-Hang , Zhu Yuanming , Palermo Samuel , Ben Yoo S.J.
Published: May 2023

We present the first experimental demonstration of an electronic-photonic co-designed transceiver circuit heterogeneously 3D co-integrated with high-density, low-parasitic Direct Bond Interconnect (DBI®) featuring full SerDes that achieves -20.3dBm OMA sensitivity and 691fJ/bit link energy efficiency.
Optical clock distribution over stable fiber links in noisy environments
Authors: Akatsuka Tomoya , Imai Hiromitsu , Takamoto Masao , Ushijima Ichiro , Goh Takashi , Hashimoto Toshikazu , Katori Hidetoshi , Oguri Katsuya , Sogawa Tetsuomi
Published: May 2023

We demonstrate a 190-km-long optical fiber link that achieves high-stability frequency transfer in noisy environments. A four-stage cascaded link with ultralow-noise laser repeater stations connects distant optical lattice clocks without deteriorating their stabilities.
Optical Frequency Transfer Stability of 1E-15 at 1 Second Over Correlated Core Pairs in a 40 km 7-core Fiber Link
Authors: Harrington Mark W. , Fontaine Nicolas , Mazur Mikael , Blumenthal Daniel J.
Published: May 2023

We demonstrate a 40km stabilized optical frequency transfer system with fractional frequency stability of 1e-15 at 1s without single-core bidirectional propagation. Highly correlated cores of a 7-core fiber are used for signal transmission and return, mitigating uncorrelated phase fluctuations found in duplex approaches.
Adaptive Geometric Constellation Shaping in a Transmission System with a Real-time Optimisation Loop
Authors: Jarmolovičius Mindaugas , Vasylchenkova Anastasiia , Sillekens Eric
Published: May 2023

We demonstrate the real-time performance of an adaptive intelligent transceiver, tailoring the constellation shape to the transmission system by iteratively maximising the information throughput, quantified by the GMI.
Scalable and Efficient Pipeline for ML-based Optical Network Monitoring
Authors: Natalino Carlos , Gifre Lluis , Muñoz Raul , Vilalta Ricard , Furdek Marija , Monti Paolo
Published: May 2023

We demonstrate a scalable processing of OPM data using ML to detect anomalies in optical services at run time. A dashboard will show operational SDN controller metrics, raw OPM data, and the ML assessment results.
Hybrid SDN Orchestration in Multi-Layer Network with SONiC Packet-Optical Nodes and Coherent Pluggables
Authors: Scano Davide , Ortiz Jordi , Giorgetti Alessio , Martínez José Manuel , Sgambelluri Andrea , Riccardi Emilio , Cugini Filippo , Pavon Pablo
Published: May 2023

This demo presents a comprehensive framework exploiting effective cooperation of packet-optical nodes, at the edge of packet and optical domains, managed by the BGP and OSPF protocols and a Hierarchical Control Architecture. The framework enables orchestrated provisioning and soft failure recovery across a multi-layer metro network.
Self-Calibrating Transponder using Intelligent DSP Metrics for Efficient Optical Networks
Authors: Spinnler Bernhard , Slovak Juraj , Su Hao , Syed Sharfuddin , Gumaste Ashwin , Bock Harald
Published: May 2023

We demonstrate a self-aware automated transponder system for disaggregated open ROADM-based networks with automation using real-time inputs from a PS-capable 800Gb/s DSP that facilitates in situ measurement of signal performance, for optimal line-rate selection.
Demonstration of Data-Sovereign Telemetry Broker for Open and Disaggregated Optical Networks
Authors: Qarawlus Haydar , Biehs Steffen , Shariati Behnam , Manresa José Juan Pedreño , Bouchedoub Ayoub , Haße Hendrik , Safari Pooyan , Autenrieth Achim , Fischer Johannes
Published: May 2023

We demonstrate a novel and modular telemetry broker that allows remote collection and exchange of telemetry data. Our proposal enforces data sovereignty principles powered by International Data Spaces components and enables unprecedented data ownership control.
Distributed Architecture Supporting Intelligent Optical Measurement Aggregation and Streaming Event Telemetry
Authors: González Pol , Casellas Ramon , Pedreno-Manresa Jose-Juan , Autenrieth Achim , Boitier Fabien , Shariati Behnam , Fischer Johannes K. , Ruiz Marc , Comellas Jaume , Velasco Luis
Published: May 2023

A distributed telemetry system integrating optical measurement and event data collection is demonstrated. Measurements of optical spectra from Nokia Bell Labs, of optical transponders from ADVA and SDN controller events from CTTC will be showcased.
Distribution of Quantum Entanglement through Fiber with Co-Propagating Classical Data
Authors: Reilly D. R. , Lee K F. , Moraw P. , Rambo T. M. , Miller A. J. , Mambretti J. , Kumar P. , Kanter G. S.
Published: May 2023

A complete system for distributing quantum entangled signals over fiber based on commercially available equipment will be demonstrated. Measurements are collected and controlled from a single location using an embedded optical data link.
Detection of abnormal activities on a SM or MM fiber
Authors: Karlsson Stefan , Andersson Mikael , Lin Rui , Wosinska Lena , Monti Paolo
Published: May 2023

We demonstrate eavesdrop detection based on polarization signatures by analyzing polarization state changes at the receiver. We identify changes related to the normal operation and the ones caused by eavesdropping.
Slice Grouping for Transport Network Slices Using Hierarchical Multi-domain SDN Controllers
Authors: Gifre Ll. , Vilalta R. , Caja-D’íaz J.C. , de Dios O. Gonzalez , Fernández-Palacios J.P. , Pedreno-Manresa J.-J. , Autenrieth A. , Silvola M. , Carapellese N. , Milano M. , Farrel A. , King D. , Martinez R. , Casellas R. , Muñoz R.
Published: May 2023

This demonstration showcases how TeraFlowSDN provides support for hierarchical control of multiple heterogeneous SDN domains (through IP, microwave and optical technologies). Different transport slices are offered with multiple SLAs and grouped to optimize resources.
Record high efficiency high-power uncooled 1.31 µm CW-DFB lasers
Authors: Gokhale Milind R. , Emanuel Mark A. , Li Benjamin
Published: May 2023

We demonstrate record high 75°C power conversion efficiencies of 25% at 100mW (1mm cavity) and 20% at 200mW (2mm cavity) for CW-DFB lasers with reliable, kink-free, single-mode operation at 1.31 µm.
A high-power, power-efficient 1.3-µm SOA-integrated DFB laser for CPO applications
Authors: Inoue Daisuke , Aoyama Konosuke , Fujiwara Naoki , Shoji Daisei , Kamisugi Harold
Published: May 2023

We present a high power 1.3-µm SOA-integrated DFB laser which exhibits a power conversion efficiency of more than 25% with output power of 350 mW up to 45°C. This device also shows an averaged RIN of below -155 dB/Hz.
Highly reliable quantum dot laser directly grown on CMOS compatible Si (001) substrate
Authors: Xiangjie Zhao , Xiang Li , Guanlin Lou , Ling Sun , Shiyong Zhang , Haihua Qi
Published: May 2023

We present highly reliable InAs/GaAs quantum dot lasers directly grown on CMOS compatible Si (001) substrate without any predefined pattern or intermediate material. Under 300mA driving current, the continuous wave optical power reaches 91mW and 70mW at 25 °C and 85 °C, respectively, with no obvious thermal rollover. Whilst operating at 85°C 100mA, the lasers have demonstrated lifetime beyond 3000 hours and the observed optical power deterioration is less than 5%.
Multi Aperture High Power 100G Single Mode 850nm VCSEL for Extended Reach 800G Ethernet
Authors: Chorchos Lukasz , Ledentsov Nikolay , Makarov Oleg , Shchukin Vitaly A. , Kalosha Vladimir , Turkiewicz Jaroslaw P. , Ledentsov Nikolay
Published: May 2023

The paper presents multi-aperture single mode 850nm VCSEL with optical modulation bandwidth exceeding 30GHz and narrow optical spectrum width enabling long distance highspeed data transmission exceeding 800m over OM4 multi-mode fiber.
A 0.4 pJ/bit NRZ Voltage Mode VCSEL Driver for up to 224 Gbit/s SWDM Links
Authors: Hecht Urs , Ordouei Helia , Ledentsov Nikolay , Scholz Philipp , Kurth Patrick , Titkov Ilya E. , Ledentsov Nikolay N. , Gerfers Friedel
Published: May 2023

We present the first true voltage-mode VCSEL driver achieving 60 Gbit/s at peak efficiency of 0.36pJ/bit with BER < 1e-12 improving the state-of-the-art by a factor of 2. Transmission experiments showcase error-free 56 Gbit/s transmission up to 100 m fiber. Advanced demonstration enables even 224 Gbit/s when using SWDM at a total efficiency of 0.4 pJ/bit.
Capacity Enhancement of VLC by Blue-green Wavelength Division Multiplexing Using Optical Phased Array
Authors: Di Yujie , Sun Caiming , Chen Shuyan , Liu Weiwei , Dai Yizhan , Li Binghui , Shi Wu , Lin Jing , Shao Yingjie , Xu Jing , Chen Lian-Kuan
Published: May 2023

We proposed and experimentally demonstrated the first blue-green OPA-based WDM-VLC systems with narrow channel spacing. A 4.5-Gbit/s transmission with 50% capacity enhancement was achieved by OCT-precoding and simplified third-order Volterra equalization.
Optical Beam Steerable and Flexible Data Rate Orthogonal Frequency Division Multiplexing Non-Orthogonal Multiple Access (OFDM-NOMA) Visible Light Communication
Authors: Jian Yin-He , Wang Chih-Chun , Wei Tzu-Chieh , Hong Ying-Kai , Chen Huang-Ming , Chow Chi-Wai , Liu Yang , Yeh Chien-Hung
Published: May 2023

We propose and demonstrate visible-light-communication (VLC) system using spatial-light-modulator (SLM) and orthogonal-frequency-division-multiplexing non-orthogonal-multiple access (OFDM-NOMA), illustrating the flexibilities of optical-beam steering and data-rate allocation for multiple users.
In-building Optical Wireless Positioning Using Time of Flight
Authors: Kottke Christoph , Ma Ziyan , Kouhini Sepideh Mohammadi , Jungnickel Volker
Published: May 2023

We present a LiFi positioning and communication system based on the ITU-T G.9991 standard. Accuracies as low as 3 cm in x,y,z direction have been achieved, utilizing an optimization approach for the LED behavior.
Experimental Demonstration of Cascadable PPLN-Based Inter-Band Wavelength Converters for Band-Switchable Multi-Band Optical Cross-Connect
Authors: Minami Haruka , Hirose Kenta , Fukatani Takafumi , Nakagawa Masahiro , Seki Takeshi , Shimizu Shimpei , Kobayashi Takayuki , Kazama Takushi , Enbutsu Koji , Watanabe Kei , Umeki Takeshi , Miyamura Takashi , Kuwahara Takeshi
Published: May 2023

We experimentally demonstrate the cascadability of PPLN-based inter-band wavelength converters to realize band-switchable multi-band optical cross-connect. Experimental results show that input power optimization can reduce the degradation in transmission quality even when traversing >20 converters.
Enabling Multiband Transmission and Programmability in Disaggregated Optical Metro Networks
Authors: Nadal L. , Casellas R. , Fabrega J. M. , Vflchez F. J. , Moreolo M. Svaluto
Published: May 2023

A multi band (MB) sliceable bandwidth/bit rate variable (S-BVT) architecture is experimentally assessed over a disaggregated optical metro network. The programmability of the MB S-BVT is demonstrated by the implementation of an OpenConfig SDN agent.
On the Impact of Fault-Induced Power Transients in Wideband Optical Networks
Authors: Souza André , Eira António , Costa Nelson , Pedro João , Pires Joao
Published: May 2023

We study the consequences of power transients caused by link faults and stimulated Raman scattering in multi-band networks. Results show that carefully optimizing transient margins should avoid high capacity reduction and excessive costs.
Core-to-Core Switching Module for 4-Core MCFs Using Silicon Photonics Matrix Switch Incorporating Silicon Vertically Curved Optical Coupler
Authors: Yoshida Tomoya , Atsumi Yuki , Omoda Emiko , Kito Katsuya , Iwasaki Katsuhiro , Kinoshita Yusuke , Kiriyama Tomoaki , Konoike Ryotaro , Suzuki Keijiro , Matsumoto Ryosuke , Inoue Takashi , Ikeda Kazuhiro , Kato Takashi , Sakakibara Youichi
Published: May 2023

We developed MCF core-to-core path-switching module using vertically curved silicon couplers. MCFs were directly mounted using passive pre-alignment with transmission camera observation. 32-Gbaud DP-QPSK signal transmission over the switch module was possible without significant penalty.
Performance Verification of 7,424 × 7,424 Optical Switch Offering 1.4 µs Switching Time
Authors: Matsumoto Ryosuke , Konoike Ryotaro , Matsuura Hiroyuki , Suzuki Keijiro , Inoue Takashi , Ikeda Kazuhiro , Namiki Shu , Sato Ken-ichi
Published: May 2023

We experimentally verily performance of 7,424 × 7,424 optical switches that offer 1.4-µs switching time. Two key enablers are reported; newly developed polarization-insensitive 64×1 silicon-photonic switches integrated with wavelength-tunable filters, and a fast burst-mode coherent receiver.
Pioneering Silicon Photonics for Wearable Sensors
Authors: Driscoll Jeffrey B. , Perea Philip , Kauffman Ariel , Zilkie Aaron J. , Steeg Benjamin Ver
Published: May 2023

The Rockley silicon photonics platform has unique advantages perfectly suited to addressing the needs of wearable health sensors. An overview of the platform is presented including its application to non-invasive continuous monitoring of body temperature.
Low-noise, Flat-spectrum, Polarization-Maintaining All-Fiber Frequency Comb for Wideband Communications
Authors: Cai Yijia , Sohanpal Ronit , Luo Yuan , Heidt Alexander M , Liu Zhixin
Published: May 2023

We design and optimize a parametric frequency comb generator using all polarization- maintaining components, highly-doped PM fiber and PM highly-nonlinear fibers, obtaining 500 tones over 100nm with >-5dBm per tone and less than 40kHz linewidth.
P4-based Hitless FaaS Load Balancer for Packet-Optical Network Edge Continuum
Authors: Pelle István , Paolucci Francesco , Sonkoly Balázs , Cugini Filippo
Published: May 2023

P4 and novel node telemetry are leveraged to provide load balancing of ultra-low latency serverless application to multiple edges. Handling the overload of one edge without observable change in application delay is demonstrated.
Impact of Laser Impairments on DSCM-Based 800G Point-to-MultiPoint Coherent Transmission Systems
Authors: Mumtaz Sami , Nguyen Trung-Hien , Hraghi Abir , Lorences-Riesgo Abel , Frignac Yann , Charlet Gabriel , Zhao Yu
Published: May 2023

We experimentally investigate the impact of laser frequency linewidth and jitter on the design of uplink point-to-multipoint 800G DSCM systems. The performance degradation due to sub-band overlap, bandwidth limitation and DSP penalty is quantified.
Pre-Link Compensation of Nonlinear Signal Distortion by a Phase Conjugation and Parameter Profiled Fiber Module
Authors: Pelusi Mark , Matsumoto Ryosuke , Inoue Takashi , Namiki Shu
Published: May 2023

Pre-compensation of nonlinear signal distortion in a transmission link by optical phase conjugation is enhanced by a Raman-amplified parameter profiled fiber for improved propagation symmetry. Application to 5×12 Gb/s DP 16-QAM signals before a 2×160 km link demonstrates 2.2 dB higher Q2-factor.
Interoperability and Experimental Evaluation of TDEC(Q) Testing for 50 and 100G PONs
Authors: van Veen Dora , Borkowski Robert , Mahadevan Amitkumar , Houtsma Vincent
Published: May 2023

We detail the TDEC(Q) method and its usage in the context of system level specifications for 50 and 100G PONs. Real-time experimental results obtained with representative PON transmitters are used to analyze and validate interoperability of these PONs.
Equalizer Convergence for various Transmission Channels and Multi-Rate Upstream 50G-PON
Authors: Simon Gaël , Sampaio Flavio Nogueira , Saliou Fabienne , Potet Jérémy , Gaillard Georges , Chanclou Philippe
Published: May 2023

We assess the feasibility of multiple transmission channel and multi-rate upstream 50G-PON. The TDEC shows that a unique preset filter may be used at both 50Gb/s and 25Gb/s to meet interoperability without adaptive equalization.
8.1 Gbps PAM8 Long-Wave IR FSO Transmission using a 9.15-µm Directly-Modulated QCL with an MCT Detector
Authors: Joharifar Mahdieh , Han Mengyao , Schatz Richard , Puerta Rafael , Sun Yan-Ting , Fan Yuchuan , Maisons Grégory , Abautret Johan , Teissier Roland , Zhang Lu , Spolitis Sandis , Wang Muguang , Bobrovs Vjaceslavs , Lourdudoss Sebastian , Yu Xianbin , Popov Sergei , Ozolins Oskars , Pang Xiaodan
Published: May 2023

We experimentally demonstrate a Long-Wave IR FSO link with a 9.15-µm directly modulated quantum cascade laser at room temperature. Up to 8.1 Gb/s PAM8 transmission over 1.4 meter is achieved with a wideband MCT detector.
OFDM-1024QAM transmission over 400m at THz band with Delta-Sigma-Modulation
Authors: Wang Kaihui , Yu Jianjun , Li Weiping , Ding Junjie , Wang Feng , Wang Chen , Zhou Wen , Zhang Jiao , Zhu Min , Xie Tangyao , Yu Jianguo , Zhao Li , Zhao Feng
Published: May 2023

For the first time, we successfully transmit 1.25GBaud OFDM-256QAM/1024QAM signals over 20km SMF and 400m wireless link at the terahertz band with 1-bit DSM. The BER of OFDM-256QAM/1024QAM can satisfy the FEC threshold of 3.8×10-3/4.0×10-2.
300-GHz-band Wireless Link Using Photonics-based Ultralow-noise Transmitter and Receiver
Authors: Maekawa Keisuke , Kawamoto Yuma , Nakashita Tomoya , Yoshioka Toki , Hori Takashi , Heffernan Brendan M. , Greenberg James , Amin Rubab , Tanigawa Tatsuya , Rolland Antoine , Nagatsuma Tadao
Published: May 2023

We present a THz wireless link using photonics-based signal generators using ultralow amplitude- and phase-noise Brillouin laser sources for both the transmitter and receiver, and demonstrate successful transmission of over-100-Gbit/s signals at 300 GHz with on-line signal processing.
Low Fusion Splice Loss Technique for Multicore Fiber with 2- and 3-electrode Fusion Splicers
Authors: Fujii Toshiyuki , Takahashi Masanori , Sugizaki Ryuichi , Tanabe Akio , Arashitani Yoshihiro
Published: May 2023

Splice loss of 4-core fiber using 2-electrode fusion splicer by automatic rotational alignment with duration time of 150 sec is reduced to 0.07 dB, getting closer to 0.02 dB by 3-electrode fusion splicer.
SINET6: Nationwide 400GE-Based Academic Backbone Network in Japan
Authors: Kurimoto Takashi , Sasayama Koji , Akashi Osamu , Urushidani Shigeo
Published: May 2023

This paper describes the practical network design of a newly-launched nationwide 400GE-based academic backbone network called SINET6. Its fully-meshed architecture with multi-layer network coordination, network services with on-demand capabilities, and performance evaluations are reported.
Real-Time 50Gb/s Upstream Transmission in TDM-PON with Class E1 Power Budget Using Ge/Si Avalanche Photodiode and Bismuth-Doped Fiber as Preamplifier
Authors: Wang Ning , Li Junwei , Zhang Dechao , Li Han , Cheng Jin , Chen Wang , Mikhailov Vitaly , Inniss Daryl , Chen Yan , Duan Xiaodong , Bai Lirong , Yu Rangchen
Published: May 2023

We experimentally demonstrate a real-time 20km transmission of 50Gb/s NRZ upstream signal in TDM-PON using a BDFA preamplifier and a Ge/Si APD receiver. The sensitivity of -27.8dBm is achieved due to the low noise figure of the BDFA.
Device Engineering and Performance Optimization of Silicon PICs for 800Gb/s Coherent Transmission
Authors: Wu Hao , Zhu Chen , Cheng Ning , Li Chenlei , Teng Min , Sun Pan , Wang Feng , Du Yinchao , Cheng Gang , Zheng Xuezhe
Published: May 2023

An end-to-end link model is developed to optimize silicon PIC and evaluate the coherent system performance. 128Gbaud 16-QAM data transmission based on silicon photonics is achieved with -9.1dBm Tx-output power and 26dB Rx OSNR sensitivity.
Adaptive Log-Likelihood-Ratio for Optical Channels with Non-Additive-White-Gaussian-Noise
Authors: Pan Chunpo , Tang Xuefeng , Qiu Meng , Zhao Tianyu , Chen Wenjing , Li Chuandong , Zhang Zhuhong
Published: May 2023

An adaptive LLR calculation algorithm is proposed for non-additive-white-Gaussian-noise (non-AWGN) optical channels. The noise distribution is continuously up-dated based on previous decisions. The performance is tested experimentally using 16-QAM and soft-DQPSK systems.
Inter-Core Crosstalk Sense-and-Compensate for Multi-Core Fiber Transmission with CAZAC Training Sequence
Authors: Cheng Chen , Zhao Can , Chen Junda , Li Weihao , Zhang Maoqi , Zhang Mingming , Chen Yizhao , Hu Zihe , Zhou Jiajun , Tang Ming
Published: May 2023

We demonstrate a novel inter-core crosstalk sense-and-compensate method with the CAZAC sequence as the frame header in the crosstalk-limited IMDD SDM system, achieving 2.5 dB sensitivity improvement and ensuring the quality of transmission.
Disaggregated SCI Estimation for QoT-E in Mixed Fibers Network Segments
Authors: Virgillito E. , Castoldi A. , D’Amico A. , Straullu S. , Bratovich R. , Rodriguez F. M. , Bovio A. , Pastorelli R. , Curri V.
Published: May 2023

We propose a spatially disaggregated model for self-channel noise coherent buildup in mixed fibers lines including dispersion compensated spans. We show that properly modeling coherence is crucial for accurate GSNR estimation.
NR Conformance Testing of Analog Radio-over-LWIR FSO Fronthaul link for 6G Distributed MIMO Networks
Authors: Puerta Rafael , Han Mengyao , Joharifar Mahdieh , Schatz Richard , Sun Yan-Ting , Fan Yuchuan , Djupsjöbacka Anders , Maisons Grégory , Abautret Johan , Teissier Roland , Zhang Lu , Spolitis Sandis , Wang Muguang , Bobrovs Vjaceslavs , Lourdudoss Sebastian , Yu Xianbin , Popov Sergei , Ozolins Oskars , Pang Xiaodan
Published: May 2023

We experimentally test the compliance with 5G/NR 3GPP technical specifications of an analog radio-over-FSO link at 9 μm. The ACLR and EVM transmitter requirements are fulfilled validating the suitability of LWIR FSO for 6G fronthaul.
Towards Optimized Demand Routing in QKD Networks
Authors: Wenning Mario , Patri Sai Kireet , Müller Jasper , Autenrieth Achim , Elbers Jörg-Peter , Rydlichowski Piotr , Mas-Machuca Carmen
Published: May 2023

We investigate buffer-aware demand-routing of key-consumption demands in QKD networks and implement a measurement-based framework for path selection. The proposed ML-based algorithm outperforms state-of-the-art heuristics by 22 % and 92 % for networks under test.
Composite Morphology Laser Written 3D Waveguides with Reduced Bend Loss
Authors: Ross-Adams A. J. , Withford M.J. , Gross S.
Published: May 2023

We demonstrate a composite laser written 3D waveguide in boro-aluminosilicate glass, with an estimated index contrast of 1.7%, providing a 2.5x improvement of minimum bend radius down to 4.0 mm at 1550 nm.
Broadband High-Performance 2×2 MMI 3-dB Coupler Enabled by SWG Lateral Cladding for the Silicon-on-Insulator Platform
Authors: Xu Luhua , Li Weijia , Zhang Jinsong , Mao Deng , Alam Md Samiul , D’Mello Yannick , Bernal Santiago , Wei Zixian , Plant David V.
Published: May 2023

We demonstrate a high-performance silicon photonic 2×2 MMI 3-dB coupler enabled by SWG lateral cladding. Measured imbalance below 0.3 dB and phase error below 1.83° are achieved over a 130 nm bandwidth covering the C-band.
Temperature-Insensitive pulse and 120℃ CW Operation of 1550nm-Band p-doped InAs/InGaAlAs Quantum Dot Lasers on InP(311)B Substrate
Authors: Yabuki Ryota , Matsumoto Atsushi , Katsuhara Ryumi , Heinsalu Siim , Akahane Koichi , Matsushima Yuichi , Ishikawa Hiroshi , Utaka Katsuyuki
Published: May 2023

We fabricated 1550nm-band, p-doped, InAs/InGaAlAs quantum-dot (QD) lasers on an InP(311)B substrate. The device showed extremely high temperature stability and lasing up to 120℃ was confirmed under CW condition.
Low-Loss Wide-FSR Miniaturized Racetrack Style Microring Filters for ⩾1 Tbps DWDM
Authors: Novick Asher , Jang Kaylx , Rizzo Anthony , Parsons Robert , Bergman Keren
Published: May 2023

We demonstrate add-drop microring filters based on 180° varied-width hybrid Euler bends, suitable for supporting >Tbps DWDM. We measure FSR>40nm, 0.64nm/mW thermal tuning efficiency, and IL
o

f

f
⩽ 0.02dB across the C- and L-bands.
Universal CMOS-Foundry Compatible Platform for Ultra-Low Loss SOI Waveguide Bends
Authors: Jang Kaylx , Novick Asher , Rizzo Anthony , Bergman Keren
Published: May 2023

We report a universal, foundry-agnostic, broadband, and ultra low-loss platform for SOI waveguide bends using fully-parameterized, varying-width, hybrid-Euler geometry. We measure record R = 1.75 µm IL of 0.0055 dB/180
◦
at 1550 nm.