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Chin. Opt. Lett.
 Home  List of Issues    Issue 05 , Vol. 03 , 2005    Dynamic PMD compensation in 40-Gb/s optical communication system

Dynamic PMD compensation in 40-Gb/s optical communication system
Tangjun Li1, Muguang Wang1, Shuisheng Jian1, Caiyun Lou2, Li Huo2, Hejun Yao2, Tigang Ning1, Jie Cui1, Fangcheng Yang1, Cao Diao1, Xiangfeng Gong1, Yongjun Fu1, Zhongwei Tan1, Yan Liu1
1Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 1000442Department of Electronic Engineering, Tsinghua University, Beijing 100084

Chin. Opt. Lett., 2005, 03(05): pp.264-264-

Topic:Fiber optics and optical communications
Keywords(OCIS Code): 060.2330  260.5430  

A 40-Gb/s optical time division multiplexing (OTDM) return-to-zero (RZ) transmission experiments including a dynamic polarization mode dispersion (PMD) compensation was reported. The dynamic PMD compensator is made up of two-stage four degrees of freedom (DOF). The first stage adopts polarization controller and fixed time-delayed line. The second stage is variable differential group delay (DGD) element. The PMD monitoring technique is based on degree of polarization (DOP) as error signal. A novel practical adaptive optimization algorithm was introduced in dynamic adaptive PMD compensation. The experimental results show that the performance of the PMD compensator is excellent for 40-Gb/s RZ transmission systems with the large DGD. With this compensator, a significant improvement of system performance can be achieved in the eye pattern of a received signal. The first-order compensating ability of the compensator is greater than 30 ps. The second-order compensating ability is greater than 200 ps2. The first-order optimum compensating time is within 10 ms. The second-order optimum compensating time is within 24 ms.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Get Citation: Tangjun Li, Muguang Wang, Shuisheng Jian, Caiyun Lou, Li Huo, Hejun Yao, Tigang Ning, Jie Cui, Fangcheng Yang, Cao Diao, Xiangfeng Gong, Yongjun Fu, Zhongwei Tan, Yan Liu, "Dynamic PMD compensation in 40-Gb/s optical communication system," Chin. Opt. Lett. 03(05), 264-264-(2005)

Note: This work was supported by the National Natural Science Foundation of China (No. 60177027 and 60377015) and the National "863" Project of China (No. 2001AA122042). T. Li's e-mail address is tjli@center.njtu.edu.cn.


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