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IET International Radar Conference 2023, IRC 2023

作者： Huang, Zicheng Shi, Mengyang Chen, Yanru Gao, Yesheng State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University China

ISBN: (纸本)9781839539954

Deep learning has made significant progress in remote sensing and target recognition in recent decades. However, as a data-driven method, its development has encountered great challenges in computing speed and power consumption. Here, we propose a self-attention armed optronic neural network (SA-OPCNN) and realize the network in the optical platform for SAR target recognition. Based on the advantage of SA-OPCNN, all computation operations are executed in optics with ultra-fast speed, low computation cost, and low space complexity. Experiments on the Moving and Stationary Target Acquisition and Recognition (MSTAR) dataset demonstrate the feasibility and scalability of the proposed lightweight SAR target recognition method. © The Institution of Engineering & Technology 2023.

关键词： Convolutional neural networks

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Imaging through Scattering Media via Optronic Convolutional Neural Network 4

Imaging through Scattering Media via Optronic Convolutional ...

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4th International Computational Imaging Conference, CITA 2024

作者： Tu, Luofei Huang, Zicheng Ma, Jiahui Guo, Zhishun Gao, Yesheng State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University 800 Dongchuan Road Shanghai200240 China

ISBN: (纸本)9781510688834

With the growing influence of machine learning, it brings benefits to the inverse problem of imaging through scattering media in computational imaging. This study introduces an innovative opto-electronic fully convolutional neural network (OP-FCNN) designed to enhance speckle reconstruction with reduced computational complexity. By integrating lens groups and spatial light modulators, the OP-FCNN performs essential functions like convolution and sampling in the optical domain, drastically lowering the computational demands compared to traditional digital methods. This approach not only improves imaging performance but also offers scalability and adaptability for various datasets. The findings indicate that the OP-FCNN represents a promising advancement toward efficient all-optical imaging systems through scattering media. © 2025 SPIE.

关键词： Imaging systems

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SPECKLE-BASED OPTRONIC CONVOLUTIONAL NEURAL NETWORK FOR SAR TARGET RECOGNITION IN LIGHT SCATTERING IMAGING

SPECKLE-BASED OPTRONIC CONVOLUTIONAL NEURAL NETWORK FOR SAR ...

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IET International Radar Conference 2023, IRC 2023

作者： Huang, Zicheng Chen, Yanru Shi, Mengyang Gu, Ziyu Gao, Yesheng State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University China

ISBN: (纸本)9781839539954

Light scattering has been a pervasive issue in past decades across many areas. The scattering medium not only destroys the imaging performance in remote sensing but also sets challenges in automatic target recognition (ATR). Recent deep learning (DL) approaches have made significant progress in ATR tasks based on the scattered speckle patterns. However, the DL methods encounter great challenges in computation speed and power consumption. Here, we develop a speckle-based optronic convolutional neural network (S-OPCNN) and realize the network in the optical platform for SAR ATR tasks. We specifically model the speckle patterns for Moving and Stationary Target Acquisition and Recognition (MSTAR) objects by random phase noise distortion. Then we train the S-OPCNN to execute the ATR tasks based on speckle patterns. In S-OPCNN, all computational operations are performed in optics with ultra-fast speed, low energy cost, and low space complexity. Experiments on MSTAR datasets demonstrate the S-OPCNN feasibility in SAR ATR under degraded imaging conditions. © The Institution of Engineering & Technology 2023.

关键词： Speckle

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Performance Comparison Between Core and Cladding Pump Schemes for Weakly-coupled Multi-core EDFAs 21

Performance Comparison Between Core and Cladding Pump Scheme...

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21st International Conference on optical communications and networks, ICOCN 2023

作者： Zhu, Baolong Huang, Shuailuo Yang, Yu Long, Chengbin Cheng, Zhangyuan He, Yongqi Li, Juhao Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Beijing100871 China

Performance between core and cladding pump schemes are simulatively compared based on weakly-coupled 7-core-single-mode and 7-core-3-mode EDFs. The results show that the two schemes have significant performance differ... 详细信息

ISBN: (纸本)9798350343502

关键词： Erbium doped fiber amplifiers

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1780-km Reach Extension with Equalization-Enhanced Phase Noise Compensation Using 3-MHz LO for WDM Coherent Transmission

1780-km Reach Extension with Equalization-Enhanced Phase Noi...

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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Zhu, Yixiao Fang, Xiansong Cai, Xiang Hu, Yimin Hu, Weisheng Zhang, Fan State Key Laboratory of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai China State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Peking University Beijing China State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Shanghai Jiao Tong University Shanghai China Pengcheng Laboratory Shenzhen China

ISBN: (纸本)9798350379266

We propose and experimentally demonstrate an efficient equalization-enhanced phase noise compensation scheme for long-haul coherent transmission. The distance is extended by 1780km and 470km for 788.4-Gb/s/λ and 968.4-Gb/s/λ line rate WDM transmission, respectively, using 3-MHz LO and receiver-side dispersion compensation. © 2024 IEEE.

关键词： Dispersion compensation

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Breaking the Limitation Between Ranging/Velocity Resolution and Voxel Rate by Coherent Stitching in a Dual-comb Lidar

Breaking the Limitation Between Ranging/Velocity Resolution ...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Cao, Xianyi Wang, Long Li, Tianyi Cai, Minglu Wu, Guiling Chen, Jianping Wu, Kan State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

We propose a coherent stitching method by exploring the coherence in different beat notes in a dual-comb Lidar. An equivalent sweeping bandwidth of 70 GHz and a voxel rate of 100 kHz are achieved. © Optica Publis... 详细信息

ISBN: (纸本)9781957171395

关键词： optical radar

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Breaking the Limitation Between Ranging/Velocity Resolution and Voxel Rate by Coherent Stitching in a Dual-comb Lidar

Breaking the Limitation Between Ranging/Velocity Resolution ...

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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

关键词： optical fibers

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optical Fiber Time Transfer Monitoring and Management System 8th

Optical Fiber Time Transfer Monitoring and Management System

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8th International Conference on Computing, Control and Industrial Engineering, CCIE 2024

作者： Li, Tianyuan Xie, Kunfeng Yang, Yansong Hu, Liang Chen, Jianping Wu, Guiling State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9789819769360

In the paper, we design a monitoring and management system (MMS) for optical fiber time transfer (OFTT) based on manager/agent model. The proposed system includes monitoring and management server (MM-Server), monitoring and management unit (MMU) on OFTT device, and the communication interfaces interconnecting these entities. Utilizing B/S architecture and the Model-View-Controller design pattern, the MM-Server effectively segregates data, service logic, and the user interface, thereby improving the system’s scalability. The scalable and persistent OFTT-MMS has been tested on a bidirectional time-division multiplexing same-fiber same-wavelength OFTT system. The results indicate that the OFTT-MMS are capable to acquire real-time operational status of the time transfer devices and links, identify and handle faults, as well as realize remote configuration and visual monitoring of system performance, which can effectively improve the reliability, security, and availability of the OFTT system. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： optical fibers

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Neural Channel Model-Aided Distributed Dispersion Manage Optimization for Mitigation of Nonlinearities and Dispersion in Fibre Transmission

Neural Channel Model-Aided Distributed Dispersion Manage Opt...

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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Zeng, Chuyan Niu, Zekun Yang, Hang Shi, Minghui Hu, Weisheng Yi, Lilin State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai China

A distributed dispersion manage system is proposed for mitigating fibre nonlinearities and dispersion in fibre transmission through optimizing accumulated chromatic dispersion (aCD) distribution. 0.7 dB OSNR improveme... 详细信息

ISBN: (纸本)9798350379266

关键词： Chromatic dispersion

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Brillouin random lasing resonance enabled fast light and superluminal propagation in optical fibers

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Optics Express 2025年第11期33卷 22497-22510页

作者： Xie, Haoran Xiao, Zhelan Liu, Zhiming Sheng, Liwen Zhan, Li Pang, Fufei Zhang, Liang Key Laboratory of Specialty Fiber Optics and Optical Access Networks Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication Shanghai Institute for Advanced Communication and Data Science Shanghai University Shanghai200444 China Ceyear Technologies Co. Ltd. Qingdao266555 China Shandong Electronic Test & Measurement Technology Innovation Center Qingdao266555 China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Physics and Astronomy Shanghai Jiao Tong University Shanghai200240 China

We proposed and demonstrated fast light and superluminal propagation based on Rayleigh scattering-induced Brillouin random lasing resonance in optical fibers. A theoretical model of the proposed Brillouin superluminal propagation system has been established, detailing the principle of optical group velocity manipulation based on the combination of stimulated Brillouin scattering and Brillouin cross-gain modulation, for the first time to the best of our knowledge. Thanks to the randomly distributed Rayleigh scattering, Brillouin random lasing resonance with a single-longitudinal-mode lasing operation essentially contributes to fast light and superluminal propagation of the pump light signals propagating along a kilometer-long optical fiber. The temporal advancement, group velocity, and group index of sinusoidally modulated pump signals are thoroughly compared in experiments, which agree well with simulations. The dependence of the Brillouin gain fibers on the group velocity as well as the impact of Stokes power under different signal modulation frequencies on the broadening factor are systematically discussed and characterized. Furthermore, the Brillouin random lasing fast-light system is developed to offer a unique time-domain analysis solution for high-sensitivity fiber Bragg grating (FBG) temperature sensing scheme. Scalable sensitivity of the proposed sensing system can be achieved by applying different modulation frequencies. These findings may find wide potential applications in optical signal processing and hyper-sensitive detection. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Stimulated Brillouin scattering

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