高速光通信偏振模色散补偿前馈信号提取方法  

Extraction of feed forward information for polarization mode dispersion compensation

作　　者：龙海[1,2] 陈林[2] 

机构地区：[1]湖南人文科技学院计算机科学技术系,娄底417000 [2]湖南大学计算机与通信学院通信工程系,长沙410082

出　　处：《激光技术》2008年第5期484-486,共3页Laser Technology

基　　金：湖南省自然科学基金资助项目(06JJ50108)

摘　　要：为了得到高阶偏振模色散的前馈信息,采用数值模拟的方法,通过一种实时提取1阶和2阶偏振模色散的模型,直接得到了偏振模色散的大小和方向。将模拟得到的偏振模色散大小与从琼斯矩阵理论中计算的结果进行比较,结果表明,采用该模型的模拟结果与理论计算值在差分群时延为一个比特周期内符合较好。从得到的偏振模色散矢量的大小和方向信息可以为高阶偏振模色散补偿提供前馈信息。这一结果对偏振模色散的前馈补偿系统的设计具有参考价值。In order to get the polarization mode dispersion feed-forward information, a real-time estimation model for the first and second polarization mode dispersion was presented, by means of which the first and second polarization mode dispersion （PMD） value and orientation can be determined. The results of PMD value by numerical simulation are similar to that estimated by Jones matrix when differential group delay is less than a bit period. The PMD vector from our model will give the feed-forward information for high order PMD compensation. The result is useful for the design of feed forward compensation of PMD.

关 键 词：光通信 偏振模色散补偿 高阶偏振模色散 前馈方法 

分 类 号：TN929.11[电子电信—通信与信息系统] O436.3[电子电信—信息与通信工程]