基于高双折射取样啁啾光纤光栅的动态PMD补偿  

Dynamic PMD compensation based on Hi-Bi sampled chirped FBG

作　　者：陈颖[1] 朱奇光[2] 李志全[1] 

机构地区：[1]燕山大学电气工程学院,秦皇岛066004 [2]燕山大学信息科学与工程学院,秦皇岛066004

出　　处：《仪器仪表学报》2010年第3期694-698,共5页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(60877047);教育部博士点基金(20070216004);河北省自然科学基金(F2008000873;F2007000396)资助项目

摘　　要：为了解决高速光纤通信系统中偏振模色散(PMD)补偿问题,提出了基于高双折射线性啁啾光纤光栅的线性应变梯度悬臂梁的结构设计;同时,考虑到波分复用系统中不同信道PMD值不同,提出了取样啁啾(CSP)与周期啁啾(CGP)的等效,通过应变测试,验证了等效啁啾的可行性。利用带有CSP的高双折射取样光纤光栅制成多信道PMD补偿器,并进行了40 Gb/s的传输系统PMD补偿实验,最大可补偿差分群时延(DGD)为58.6 ps,补偿后信号眼图张开度有明显改善,信号传输误码率可降至3.59e-16。To solve the problem of polarization mode dispersion（PMD） compensation in high-rate optical communication system,a structure design of linear strain gradient cantilever based on high-birefringence（Hi-Bi） linearly chirped FBG（LCFBG） has been proposed and demonstrated in strain test.Considering that there are different PMD values in different channels in wavelength division multiplexing（WDM） system,a novel idea that the chirp in sample period（CSP） is equivalent to the chirp in grating period（CGP） has been proposed.Using the Hi-Bi sampled FBG with CSP,a PMD compensator was fabricated to compensate various PMD values in different channels simultaneously. In the PMD compensation experiment,maximum compensation of 58.6 ps differential group delay（DGD） has been achieved,the opening of signal eye diagram after compensation has been improved obviously,and the bit error rate could be reduced to 3.59e - 16.

关 键 词：偏振模色散补偿 双折射 高双折射线性啁啾光纤光栅 高双折射取样光纤光栅 

分 类 号：TN929[电子电信—通信与信息系统]