光相干探测技术在光通信系统中的应用研究  

Research on application of optical coherent detection technology in optical communication system

作　　者：易禾[1] 李欣[1] YI He;LI Xin(Sichuan Normal University,Chengdu 610101,China)

机构地区：[1]四川师范大学

出　　处：《激光杂志》2018年第8期67-70,共4页Laser Journal

基　　金：四川省教育厅科研项目(No.SCYG2017-9-13)

摘　　要：为了提高光通信系统对光信号的探测和传输性能,降低通信系统的相干性干扰,提出基于光相干探测技术的光通信系统设计方法。采用VXI总线作为光信号传输的触发总线,功能模块包括通信时钟模块、触发总线模块、局部总线模块、数据采集模块、光相干探测模块、均衡器模块等,采用光相干探测技术进行光通信的信号检测,结合自适应滤波器进行码间干扰滤波,采用统计检测准确进行信道均衡设计,在DSP集成处理器环境下进行光通信系统的硬件模块化设计。仿真结果表明,本文光通信系统具有很好的光信号传输性能,系统的抗干扰能力较强,信号的探测性能较好。In order to improve the detection and transmission performance of optical signal in optical communication system,and reduce the coherent interference of communication system,this paper presents a design method of optical communication system based on optical coherent detection technology. Optical communication system uses VXI bus as trigger bus for optical signal transmission. The function module of the system consists of communication clock module and trigger bus module. Local bus module,data acquisition module,optical coherent detection module,equalizer module and so on,using optical coherent detection technology to detect the signal of optical communication,combined with adaptive filter for inter-symbol interference filtering,the channel equalization design is carried out accurately by statistical detection,and the hardware modularization of optical communication system is designed under the environment of DSP integrated processor. The simulation results show that the designed optical communication system has good optical signal transmission performance. The system has strong anti-jamming ability and good signal detection performance.

关 键 词：光相干探测技术 光通信系统 均衡器 滤波器 

分 类 号：TN911[电子电信—通信与信息系统]