NRZ码和CSRZ码在40 Gbit/s单通道系统中传输性能分析  

Performance analysis of NRZ and CSRZ formats in 40 Gbit/s single channel transmission systems

作　　者：杨名[1] 张禄[1] 刘红捷[1] 

机构地区：[1]烽火通信科技股份有限公司,湖北武汉430074

出　　处：《光通信研究》2004年第1期5-8,共4页Study on Optical Communications

基　　金：国家"十五"科技攻关项目(2002BA106B)

摘　　要：文章仿真了非归零码(NRZ)和载波抑制归零码(CSRZ)在40Gbit/s单通道系统中G.652光纤上传输6×80km的性能.比较了两种码型对接收端光滤波器和电滤波器带宽的要求、不同的入纤功率下功率代价以及残余色散对比.结果表明,在高速传输系统中,CSRZ码的传输性能明显优于NRZ码.The transmission performance of nonreturn-to-zero(NRZ) and carried-suppressed return-to-zero(CSRZ) in 40 Gbit/s single channel systems over 6×80 km G.652 fiber is described in this paper. The bandwidth requirement of optical and electrical filter of receiver is analyzed for NRZ and CSRZ formats. The comparison of power penalty in different fiber-input power of NRZ and CSRZ and residual dispersion of the two formats is investigated. It shows that the transmission performance of CSRZ is better than that of NRZ in high-speed systems.

关 键 词：NRZ码 CSRZ码 非归零码 载波抑制归零码 光纤通信 功率代价 传输性能 

分 类 号：TN929.11[电子电信—通信与信息系统]