不同编码技术在40Gb/s光纤通信中的应用研究  

Research of different coding technologies in 40Gb/s optical-fiber transmission system

作　　者：董毅[1] 倪延辉[1] 洪华[1] 赵尚弘[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《光通信技术》2011年第6期41-43,共3页Optical Communication Technology

摘　　要：介绍了利用马赫-曾德尔调制器产生NRZ码、RZ码及CSRZ码三种码型的基本原理,并对比分析了其色散和非线性容限大小,在此基础上基于光二进制差分相移键控(oDPSK)调制技术,在40Gb/s通信系统中对结果进行了光纤链路仿真验证。结果表明,CSRZ-DPSK具有较高的色散容限和非线性容限,是未来长距离高速光纤通信中最具优势的传输码型。The generation principles of the codes of NRZ,RZ and CSRZ using MZ modulator is introduced in this paper,dispersion and nonlinearity tolerance of the codings are analysed,and the simulation is made based on oDPSK modulation technology in 40Gb/s transmission system,which is agreed with the analytical results.The result shows that CSRZ code has the highest dispersion tolerance and moderate nonlinearity tolerance,and will be the most competitive code in long-distance and high-speed optical-fiber transmission system in future.

关 键 词：MZ调制器 编码技术 色散容限 非线性容限 

分 类 号：TN929.11[电子电信—通信与信息系统]