偏振模色散仿真系统研究  

Study on the Simulation System for Polarization Mode Dispersion

作　　者：何军[1] 刘德明[1] 李蔚[1] 杨春勇[1] 

机构地区：[1]华中科技大学光电子工程系,湖北武汉430074

出　　处：《光电子技术与信息》2004年第5期37-41,共5页Optoelectronic Technology & Information

基　　金：武汉市科技攻关项目(2002100513004)

摘　　要：单模光纤内核圆对称结构的破坏而导致的缺陷会在传播时引起光学脉冲变形展宽,从而导致偏振模色散,且偏振模色散具有统计特性。本文通过计算机仿真偏振模色散系统。通过改变通信系统参数,研究一阶偏振模色散对不同通信系统的影响,分析在不同系统参数情况下的偏振模色散群时延差、信号脉冲展宽和信号眼图,并讨论了不同码型对偏振模色散的影响。Small deviations from perfect circular symmetry in the core region of 'single-mode' fibers cause optical pulses to be broadened as they propagate, referred to as polarization mode dispersion, which has statistical characters. Numerical computer simulations can calculate the first-order polarization mode dispersion. Through changing the parameters, many effects caused by the first-order polarization mode dispersion can be gotten, and differential group delay, pulse broadens and eye-diagrams in different systems were researched.

关 键 词：偏振模色散 群时延差 统计概率分布 偏振主态 计算机模拟仿真 

分 类 号：TN929.11[电子电信—通信与信息系统]