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Conference on Lasers and Electro-Optics (CLEO)

作者： Siyu E Xinhang Li Yuyao Guo Yihao Fan Minhui Jin Yu Li Anton Stroganov Liangjun Lu Jianping Chen Linjie Zhou Department of Electronic Engineering State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Jiao Tong University Shanghai China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu China LIGENTEC SA EPFL Innovation Park Ecublens Switzerland

We present a III-V/Si 3 N 4 widely tunable hybrid laser with an intrinsic linewidth of 50 Hz by using a resonance feedback from a high-Q ring resonator. The linewidth is reduced by approximately 24 fold. &#1.9; 2024 ... 详细信息

ISBN: (纸本)9798350369311

关键词： Laser feedback Ring lasers Lasers and electrooptics Resonance optical ring resonators Electro-optical waveguides

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Silicon-integrated high-speed mode and polarization switch-andselector

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Journal of Semiconductors 2022年第2期43卷 54-58页

作者： Yihang Dong Yong Zhang Jian Shen Zihan Xu Xihua Zou Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiao Tong UniversityChengdu 611756China

On-chip optical {1.s are growingly aiming at multimode operation together with mode-division multiplex-ing to further increase the transmission *** switches,which are capable of optical signals switching at the nodes,play a key role in optical *** demonstrate a 2×2 electro-optic Mach-Zehnder interferometer-based mode-and polar-ization-selective switch fabricated by standard complementary metal-oxide-semiconductor *** electro optic tuner based on a PN-doped junction in one of the Mach-Zehnder interferometer arms enables dynamic switching in 1. *** all the channels,the overall insertion losses and inter-modal crosstalk values are below 9.03 and-1..86 dB at 1.50 nm,respect-ively.

关键词： mode and polarization switch-and-selector silicon photonics high speed

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Improving the frequency chirp linearity of a frequency-modulated continuous-wave laser 26

Improving the frequency chirp linearity of a frequency-modul...

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26th Optoelectronics and communications Conference, OECC 2021

作者： Liu, Chuxin Guo, Yuyao Xu, Weihan Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We propose a novel driving signal pre-distortion method to improve the frequency chirp linearity of an InP/Si3N4 hybrid-integrated external cavity laser. The measured chirp linearity is increased from 87.3% to 99.7%. ... 详细信息

ISBN: (纸本)9781557528209

关键词： Continuous wave lasers

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8×8 Microring optical Switch on a Dual-layer Si3N4-on-SOI Platform

8×8 Microring Optical Switch on a Dual-layer Si3N4-on-SOI P...

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2021.Asia communications and Photonics Conference, ACP 2021

作者： Li, Xin Gao, Wei Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate an 81.;8 microring switch based on a dual-layer Si3N4-on-SOI platform. Experimental results show the chip has a fiber-to-fiber insertion loss &#1.9; Optica Publishing Group 2021

ISBN: (纸本)9781957171005

We demonstrate an 8×8 microring switch based on a dual-layer Si3N4-on-SOI platform. Experimental results show the chip has a fiber-to-fiber insertion loss © Optica Publishing Group 2021

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Passively mode-locked fiber laser based on ethylene glycol

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Results in Physics 2024年 60卷

作者： Zhang, Wenyan Jiang, Huijie Zheng, Lei Liu, NanNan Zhang, Xiaodong Yang, Kun Zhan, Li Henan Key Lab of Magnetoelectronic Information Functional Materials School of Electronics and Information Zhengzhou University of Light Industry Zhengzhou 450002 China State Key Lab of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China

A passively mode-locked Er-doped fiber laser employing ethylene glycol as a saturable absorber (SA) has been proposed and experimentally validated. The ethylene glycol-SA is fabricated by filling the space between the end facets of two optical patch cords inserted into a cannula with ethylene glycol. Utilizing such an SA with a modulation depth of 9.6 %, stable mode-locking operation are manifested in the laser cavity, including the production of bright pulse and bright-dark pulse pair. The generated bright pulse has a center wavelength at 1.62.28 nm, a 3 dB bandwidth of 0.21.nm, a repetition frequency of 20.24 MHz, and a signal-to-noise ratio (SNR) of 57 dB. Through precisely manipulating the polarization {1. and the pump power in the laser cavity, the bright-dark pulse pairs can be successfully attained at the same repetition frequency. This is the first demonstration of a passively mode-locked fiber laser utilizing ethylene glycol as the saturable absorber. Due to their superior optical absorption characteristics, low cost, simplicity in fabrication and non-volatile nature, ethylene glycol-SAs have enormous potential in the field of nonlinear optics and ultrafast photonics. © 2024 The Authors

关键词： Ethylene glycol Fiber lasers optical solitons Pulse laser

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Silicon integrated low-loss 4-channel 5-bit optical true-time delay lines 26

Silicon integrated low-loss 4-channel 5-bit optical true-tim...

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26th Optoelectronics and communications Conference, OECC 2021

作者： Liu, Yuanbin Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate 4-channel tunable optical delay lines with delay > 500 ps and delay error &#1.9; OSA 2021. &#1.9; 2021.The Author(s)

ISBN: (纸本)9781557528209

关键词： Timing circuits

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An iterative algorithm for artifacts removal in Fourier-domain optical coherence tomography 25

An iterative algorithm for artifacts removal in Fourier-doma...

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optical Coherence Tomography and Coherence Domain optical Methods in Biomedicine XXV 2021

作者： Wang, Mengyuan Ling, Yuye Shao, Shuo Su, Yikai John Hopcroft Center for Computer Science Shanghai Jiao Tong University Shanghai China Department of Electronic Engineering State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai China

ISBN: (数字)9781510640962

ISBN: (纸本)9781510640955

FD-OCT is a widely used technology which could provide high-resolution 3D reconstruction images. Conventional OCT uses IDFT reconstruction method, which could obtain an FFT-limited axial resolution. Recently, several optimization-based methods have reportedly achieved a resolution improvement, while undesired noise artifacts might appear in their result, which could degrade the image quality. In this work, we proposed an iterative error reduction method in order to remove the artifacts as well as improve the resolution. A numerical simulation is designed to validate our algorithm. Two reconstruction methods including IDFT reconstruction, and l1.minimization are selected for a comparative study. Specifically, we conduct the simulation at four different noise levels. The result shows that our proposed method could greatly suppress the artifact and obtain a great reconstruction even when the SNR is reduced. © 2021.SPIE.

关键词： Image reconstruction

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Neural network-based equalization in high-speed PONs

Neural network-based equalization in high-speed PONs

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optical Fiber {1. Conference, OFC 2020

作者： Yi, Lilin Liao, Tao Xue, Lei Hu, Weisheng State Key Lab of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China

ISBN: (数字)9781943580712

ISBN: (纸本)9781943580712

We introduce neural network (NN)-based equalization in high-speed passive optical {1.. Data feature engineering is proposed to improve performance of NN-based equalization. Besides, an unsupervised learning scheme for NN-based equalizer is proposed to train the model without known symbols of received signal. OFC 2020 © OSA 2020 © 2020 The Author(s)

关键词： Equalizers

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Progress in silicon-based reconfigurable and programmable all-optical signal processing chips

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Frontiers of Optoelectronics 2025年第1期18卷 10-10页

作者： Xu, Jing Dong, Wenchan Huang, Qingzhong Zhang, Yujia Yin, Yuchen Zhao, Zhenyu Zeng, Desheng Gao, Xiaoyan Gu, Wentao Yang, Zihao Li, Hanghang Han, Xinjie Geng, Yong Zhai, Kunpeng Chen, Bei Fu, Xin Lei, Lei Wu, Xiaojun Dong, Jianji Su, Yikai Li, Ming Liu, Jianguo Zhu, Ninghua Guo, Xuhan Zhou, Heng Wen, Huashun Qiu, Kun Zhang, Xinliang Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan430074 China Optics Valley Laboratory Wuhan430074 China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China Key Lab of Optical Fiber Sensing and Communication Networks University of Electronic Science and Technology of China Chengdu611731 China Institute of Intelligent Photonics Nankai University Tianjin300071 China Key Laboratory of Optoelectronic Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China School of Electronic and Information Engineering Beihang University Beijing100191 China

Taking the advantage of ultrafast optical linear and nonlinear effects, all-optical signal processing (AOSP) enables manipulation, regeneration, and computing of information directly in optical domain without resorting to electronics. As a promising photonic integration platform, silicon-on-insulator (SOI) has the advantage of complementary metal oxide semiconductor (CMOS) compatibility, low-loss, compact size as well as large optical nonlinearities. In this paper, we review the recent progress in the project granted to develop silicon-based reconfigurable AOSP chips, which aims to combine the merits of AOSP and silicon photonics to solve the unsustainable cost and energy challenges in future communication and big data applications. Three key challenges are identified in this project: (1) how to finely manipulate and reconfigure optical fields, (2) how to achieve ultra-low loss integrated silicon waveguides and significant enhancement of nonlinear effects, (3) how to mitigate crosstalk between optical, electrical and thermal components. By focusing on these key issues, the following major achievements are realized during the project. First, ultra-low loss silicon-based waveguides as well as ultra-high quality microresonators are developed by advancing key fabrication technologies as well as device structures. Integrated photonic filters with bandwidth and free spectral range reconfigurable in a wide range were realized to finely manipulate and select input light fields with a high degree of freedom. Second, several mechanisms and new designs that aim at nonlinear enhancement have been proposed, including optical ridge waveguides with reverse biased PIN junction, slot waveguides, multimode waveguides and parity-time symmetry coupled microresonators. advanced AOSP operations are verified with these novel designs. Logical computations at 100 Gbit/s were demonstrated with self-developed, monolithic integrated programmable optical logic array. High-dimensional multi-valu

关键词： Four wave mixing

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Wavelength-Selective 2 × 2 optical Switch Based on a Ge2Sb2 Te5-Assisted Microring for the 2-μm Wavelength Band

Wavelength-Selective 2 × 2 Optical Switch Based on a Ge2Sb2...

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Asia communications and Photonics Conference and Exhibition (ACP)

作者： Weixun Zhu Xing Yang Huan Li Liangjun Lu Linjie Zhou Daoxin Dai State Key Laboratory for Modern Optical Instrumentation Center for Optical & Electromagnetic Research College of Optical Science and Engineering International Research Center for Zhejiang University Zijingang Campus Hangzhou China Department of Electronic Engineering State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Jiao Tong University Shanghai China Ningbo Research Institute Zhejiang University Ningbo China

We propose and demonstrate a wavelength-selective 2 1.;2 silicon photonic switch using a Ge2Sb2Tes-assisted microring-resonator for the 2-μm wavelength-band, showing an extinction ratio of ~20 dB and a low excess ...

We propose and demonstrate a wavelength-selective 2 ×2 silicon photonic switch using a Ge2Sb2Tes-assisted microring-resonator for the 2-μm wavelength-band, showing an extinction ratio of ~20 dB and a low excess loss of ~1.dB.

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