4×10 Gb/s OTDM系统中偏振模色散自适应补偿的研究  

Dynamic PMD compensation in 4×10 Gb/s optical time-division multiplexed transmission system

作　　者：王目光[1] 李唐军[1] 娄采云[2] 简水生[1] 霍力[2] 姚和军[2] 曾丽[2] 崔杰[1] 刁操[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044 [2]清华大学电子工程系,北京100084

出　　处：《物理学报》2005年第6期2774-2778,共5页Acta Physica Sinica

基　　金：国家高技术研究发展计划(批准号:2001AA122042);国家自然科学基金(批准号:60377015和60177027)资助的课题.~~

摘　　要：利用信号偏振度为反馈信号,基于可变步长最大值搜索算法实现了4×10Gb s光时分复用(OTDM)系统偏振模色散(PMD)自适应跟踪补偿实验.PMD补偿器为偏振控制器加可变时延线的四自由度结构.最大差分群时延(DGD)补偿量为25ps,即信号的一个比特周期,补偿时间小于50ms.Using the degree of polarization as feedback signal to detect the polarization mode dispersion (PMD) variation in the fiber links, an experiment of dynamic adaptive PMD compensation in 4 × 10 Gb/s optical time-division multiplexed (OTDM) transmission system is reported. The PMD compensator consists of a polarization controller and a variable delay line with four degrees of freedom. Based on the variable step-size peek search algorithm, the performance of the PMD compensator is assessed in the eye pattern of a received signal. It is shown that the maximum compensated differential group delay is 25 ps, i.e. one bit period, and the compensation time can be less than 50 ms.

关 键 词：偏振模色散 光时分复用系统 偏振度 自适应补偿 光纤传输 

分 类 号：O436.3[机械工程—光学工程]