摘要
光交换芯片作为下一代全光通信网络的核心器件,其串扰性能严重影响着光交换节点的容量。为了评估光交换芯片对通信系统的劣化程度影响,基于硅基马赫-曾德尔干涉仪电光开关,构建了32×32 Benes结构的光交换集成芯片的仿真模型,分析了光交换芯片串扰与光开关单元串扰之间的关系,研究了光交换芯片对光纤通信系统的影响。仿真结果表明:对于单偏振200 Gb/s 64QAM信号,光接收机灵敏度劣化程度对开关单元串扰的依赖性可用线性分母的有理函数表达,当每个光开关单元的串扰小于-46 dB时,光接收机灵敏度劣化程度不超过0.5 dB。
As the core device of the next-generation all-optical communication network,optical switching chip has a serious impact on the capacity of optical switching node.In order to evaluate the degradation degree of the optical switching chip to the communication system,a simulation model of optical switching integrated chip with 32×32 Benes structure is constructed using the silicon-based electro-optical Mach-Zehnder interferometers.The relationship between the crosstalk of the optical switching chip and the crosstalk of the optical switch unit is analyzed,and the influence of the optical switching chip on the optical fiber communication system is studied.The simulation results show that the degradation of receiver sensitivity due to optical switch crosstalk can be expressed by the rational function with a linear denominator for a single polarization 200 Gb/s 64QAM signal.When the crosstalk of each optical switch element is less than-46 dB,the sensitivity degradation of the optical receiver is no more than 0.5 dB.
作者
冉启山
武保剑
谭磊
文峰
邱昆
RAN Qishan;WU Baojian;TAN Lei;WEN Feng;QIU Kun(School of Information and Communication Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China;China Key Laboratory of Optical Fiber Sensing and Communication Ministry of Education,University of Electronic Science and Technology of China,Chengdu 611731,China)
出处
《光通信技术》
2021年第5期26-31,共6页
Optical Communication Technology
基金
国家自然科学基金(No.61671108)资助。
作者简介
冉启山(1994-),男,硕士生,现就读于电子科技大学信息与通信工程学院电子与通信工程专业,主要从事光交换芯片拓扑结构及性能参数对光纤通信系统影响程度方面的研究工作,并搭建不同的仿真模型进行验证和研究;通信作者:武保剑(E-mail:bjwu@uestc.edu.cn)。
