初始啁啾和偏振效应对光纤通信系统的影响  

Effects of initial chirping and polarization on fiber-optic communication systems

作　　者：刘汉奎[1] 田小兴[1] 袁福来[1] 

机构地区：[1]西华师范大学物理与电子信息学院,四川南充637002

出　　处：《光通信研究》2009年第5期27-29,44,共4页Study on Optical Communications

基　　金：四川省教育厅重点实验室专项项目(2006ZD026)

摘　　要：采用多重重要抽样方法,对受偏振模色散(PMD)和偏振相关损耗(PDL)联合影响的10 Gbit/s光通信系统在不同脉冲初始啁啾和占空比下的性能进行了数值仿真。给出了PMD=10 ps和PDL=1、1.5 dB时开关键控(OOK)和差分相移键控(DPSK)调制的光传输系统的功率代价分布和系统失效概率。发现在不同占空比下,系统性能有明显不同;引入适当的初始啁啾(如啁啾因子C=0.5),有利于提高系统的性能。Using the Multiple Important Sampling （MIS） technique, the performances of 10 Gbit/s optical communication systems affected jointly by Polarization-Mode Dispersion （PMD） and Polarization Dependent Loss （PDL） are simulated under different initial pulse chirps and duty cycles. The power penalty distribution and system outage probability of the system modulated by On-Off Keying （OOK） and Differential Phase Shift Keying （DPSK） are given when PMD= 10 ps and PDL = 1 and 1.5 dB. It is found that the system performance obviously varies under different duty cycles and the introduction of proper initial chirps, e.g. C = 0.5, is conducive to the enhancement of the system performance.

关 键 词：光纤通信 偏振模色散 偏振相关损耗 多重重要抽样 失效概率 

分 类 号：TN929.11[电子电信—通信与信息系统]