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Chinese Optics Letters 2024年第7期22卷 126-131页

作者： Xiao Yu Jia Ye lianshan yan Tao Zhou Yue Zhu Peng Li Xihua Zou Wei Pan Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China Key Laboratory of Electronic Information Control Southwest China Research Institute of Electronic EquipmentChengdu 610029China Microwave Photonics Research Laboratory School of Electrical Engineering and Computer ScienceUniversity of OttawaOttawaONK1N6N5Canada

We propose and experimentally demonstrate a photonic method for wideband multipath self-interference cancellation using a silicon photonic modulator *** chip generates phase-inverted reference signals by leveraging the opposite phase between optical *** managing amplitude and phase imbalances between self-interference and reference signals,the approach rectifies discrepancies through consistent chip manufacturing and packaging *** photonic multi-dimensional multiplexing,including wavelength and polarization,enables the acquisition of multiple reference *** results show multipath cancellation depths of 25.53 dB and 23.81 dB for bandwidths of 500 MHz and 1 GHz,achieved by superimposing 2-path reference signals.

关键词： microwave photonics multipath self-interference silicon photonics

Joint modulation format identification and OSNR monitoring based on Stokes vector distribution features for digital coherent optical receivers

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Chinese Optics Letters 2024年第5期22卷 22-28页

作者：蒲正宇蒋林闫连山易安林何海军潘炜罗斌 Center for Information Photonics&Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China

For joint modulation format identification(MFI)and optical signal-to-noise ratio(OSNR)monitoring,a simple and intelligent optical communication performance monitoring method is proposed,and the feasibility is demonstrated by digital coherent optical communication *** experiment results show that for all modulation formats,including 28 GBaud polarization division multiplexing(PDM)QPSK/8-QAM/16-QAM/64-QAM,100%MFI accuracies are achieved even at OSNR values lower than the corresponding theoretical 20%forward error correction limit,as well as the high accuracies for OSNR ***,the proposed scheme has a reasonable monitoring level when chromatic dispersion and fiber nonlinear effects are varied.

关键词： coherent communication optical performance monitoring deep neural network

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基于倒装键合的高速高功率平衡光电探测器

光学学报 2024年第13期44卷 18-25页

作者：王紫赟谢小军魏超潘炜闫连山西南交通大学信息科学与技术学院四川成都611756

提出并制备一种高速高功率改进型单行载流子平衡光电探测器,通过引入P型掺杂牺牲层,调节漂移层电场强度,赋能光生电子近弹道输运特性,进而减少载流子的渡越时间,有效扩展器件的带宽,并在高功率条件下有效抑制器件的功率饱和现象。同时,... 详细信息

提出并制备一种高速高功率改进型单行载流子平衡光电探测器,通过引入P型掺杂牺牲层,调节漂移层电场强度,赋能光生电子近弹道输运特性,进而减少载流子的渡越时间,有效扩展器件的带宽,并在高功率条件下有效抑制器件的功率饱和现象。同时,将光电探测器芯片倒装键合在高导热系数金刚石基片上,降低光电探测器芯片核心温度,进一步提高器件射频输出功率。在-3 V偏压下器件暗电流小于200 nA。有源区直径为4、6、8μm的器件分别具有52、42、40 GHz的3 dB带宽响应。有源区直径为6μm和8μm的器件分别在50 GHz、47 GHz处达到8.0 dBm和14.0 dBm的射频输出功率。

关键词：高速光电探测器光电探测器平衡光电探测器倒装键合微波光子学

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太赫兹光电探测器及其异质集成(特邀)

光学学报 2024年第15期44卷 123-145页

作者：谢小军魏超叶佳邹喜华潘炜闫连山西南交通大学光电融合集成与通信感知教育部重点实验室四川成都611756 西南交通大学信息科学与技术学院四川成都611756

梳理并总结了近年来高功率三五族太赫兹光电探测器、锗硅太赫兹光电探测器以及异质集成光电探测器的研究进展,详细介绍了三类光电探测器的结构优化、制备技术改进以及在带宽和输出功率方面取得的突破,并分析了其面临的问题与挑战。通过... 详细信息

梳理并总结了近年来高功率三五族太赫兹光电探测器、锗硅太赫兹光电探测器以及异质集成光电探测器的研究进展,详细介绍了三类光电探测器的结构优化、制备技术改进以及在带宽和输出功率方面取得的突破,并分析了其面临的问题与挑战。通过对这些器件发展的综述,为未来太赫兹光电探测器的发展方向提供了参考。

关键词：太赫兹光电探测器光电子学异质集成微波光子光通信

An Effective SDN Controller Scheduling Method to Defence DDoS Attacks

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Chinese Journal of Electronics 2019年第2期28卷 404-407页

作者： LI Saifei CUI Yunhe NI Yongfeng yan lianshan The School of Information Science and Technology Southwest Jiaotong University

Distributed Denial of Service(DDoS)attack is a difficult issue which needs to be addressed in Software defined networking(SDN). In order to help the controller to weather out the DDoS attack, an efficient controller scheduling method is proposed. The proposed controller scheduling method uses the normalized waiting time, length and extent of the switch being attacked to choose the request that needs to be processed by the controller. The evaluation results validate that compared with the polling based controller scheduling method, the proposed one can significantly reduce the connection failure ratio and delay.

关键词： Software defined networking(SDN) Distributed Denial of Service(DDoS) Security

All-optical processing to optical and radio frequency(RF) signals

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Science Bulletin 2015年第24期60卷 2151-2153页

作者： Xihua Zou Wei Pan lianshan yan Center for Information Photonics and Communications Southwest Jiaotong University Institute of Optoelectronics University of Duisburg-Essen

Signal processing is always the heart of the overall information technology and industry,providing enabling solutions for the processing,understanding,learning,retrieval,mining,and extraction of information from diffe... 详细信息

关键词：下线服务迁移

On Multicast Routing With Network Coding: A Multiobjective Artificial Bee Colony Algorithm

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China Communications 2019年第2期16卷 160-176页

作者： Huanlai Xing Fuhong Song lianshan yan Wei Pan The School of Information Science and Technology Southwest Jiaotong University

This paper is concerned with two important issues in multicast routing problem with network coding for the first time, namely the load balancing and the transmission delay. A bi-objective optimization problem is formulated, where the average bandwidth utilization ratio and the average transmission delay are both to be minimized. To address the problem, we propose a novel multiobjective artificial bee colony algorithm, with two performance enhancing schemes integrated. The first scheme is an elitism-based food source generation scheme for scout bees, where for each scout bee, a new food source is generated by either recombining two elite solutions randomly selected from an archive or sampling the probabilistic distribution model built from all elite solutions in this archive. This scheme provides scouts with high-quality and diversified food sources and thus helps to strengthen the global exploration. The second one is a Pareto local search operator with the concept of path relinking integrated. This scheme is incorporated into the onlooker bee phase for exploring neighboring areas of promising food sources and hence enhances the local exploitation. Experimental results show that the proposed algorithm performs better than a number of state-of-the-art multiobjective evolutionary algorithms in terms of the approximated Pareto-optimal front.

关键词： evolutionary computation multicast network coding swarm intelligence

Simultaneous unidirectional and bidirectional chaos-based optical communication using hybrid coupling semiconductor lasers

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Science China(Information Sciences) 2014年第1期57卷 280-290页

作者： JIANG Ning PAN Wei LUO Bin yan lianshan XIANG ShuiYing Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong University

A simultaneous unidirectional and bidirectional chaos-based optical communication scheme based on a hybrid coupling semiconductor laser system that consists of one center semiconductor laser(CSL)and multiple side semiconductor lasers(SSLs)is proposed *** this scheme,the SSLs oriented in a linear chain mutually couple with the adjacent SSLs and they are subjected to identical unidirectional injections from the CSL which is a chaotic external cavity semiconductor *** theoretically analyze the conditions for diferent types of chaos synchronization based on the symmetry operation mechanism and injection-locking mechanism,and numerically investigate the influences of operation parameters,parameter mismatch robustness,chaos pass filtering efects and communication performance of the hybrid coupling semiconductor laser *** simulation results demonstrate that with proper selection of the unidirectional and mutual coupling conditions,the SSLs can synchronize with each other isochronally and simultaneously synchronize to the CSL completely or laggardly,which enables the proposed system to achieve a unidirectional broadcasting communication from the CSL to the SSLs and a bidirectional communication among the SSLs *** proposed scheme is beneficial to the implementation of optical chaos communication networks.

关键词： semiconductor laser optical communication chaos synchronization chaos communication net-works hybrid coupling

Photonic generation of microwave signals with tunabilities

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Chinese Science Bulletin 2014年第22期59卷 2672-2683页

作者： Hengyun Jiang lianshan yan Jia Ye Wei Pan Bin Luo Xihua Zou Center for Information Photonics and Communications School of Information Science and Technology Southwest Jiaotong University

Microwave photonic signal generation schemes based on the frequency to time mapping and external modulation are *** concentrate on those configurations that can provide tunability of frequency,phase of signal,modulati... 详细信息

关键词：微波信号光子产生可调频率调制格式微波光子时间映射 2PSK 2FSK

A 32-channel 100 GHz wavelength division multiplexer by interleaving two silicon arrayed waveguide gratings

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Chinese Physics B 2021年第12期30卷 339-342页

作者： Changjian Xie Xihua Zou Fang Zou lianshan yan Wei Pan Yong Zhang Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China

A 32-channel wavelength division multiplexer with 100 GHz spacing is designed and fabricated by interleaving two silicon arrayed waveguide gratings(AWGs).It has a parallel structure consisting of two silicon 16-channel AWGs with200 GHz spacing and a Mach-Zehnder interferometer(MZI)with 200 GHz free spectral *** 16 channels of one silicon AWG are interleaved with those of the other AWG in spectrum,but with an identical spacing of 200 *** the composed wavelength division multiplexer,the experiment results reveal 32 wavelength channels in C-band,a wavelength spacing of 100 GHz,and a channel crosstalk lower than-15 dB.

关键词： wavelength division multiplexer arrayed waveguide grating silicon photonics Mach-Zehnder interferometer