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《Chinese Journal of Lasers》 2005-01
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Investigation of the PMD Compensation System with the DOP as a Feed Back Signal

LIU Yu-min 1,2, YU Zhong-yuan 1,2, HUANG Cong-ying 3, ZHANG Xiao-guang 1,2 1School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China 2Key Laboratory of Communication and Lightwave Technologies Ministry of Education, Beijing 100876 3No.726 Institute of China Ship Building Industry Corporation, Shanghai 200025, China  
The monitoring performance of monitor window and degree of polarization (DOP) sensitivity to defferetial group delay (DGD) can be improved greatly by using the band-pass and band-reject filters are presented in the polarization mode dispersion (PMD) compensation system, where the DOP is used for the feed back signals. A comparison is made for the filters in improving the monitoring performance of the feed back signals between the 40 Gbit/s return-to-zero (RZ) and 10 Gbit/s nonretrun-to-zero (NRZ) transmission system, and numerical analysis is made for the selection of the bandwidth of the filters. The results showed that the local extremum can be avoid in the searching process of the searching algorithm, so a bypass searching is reduced greatly, which is significant for the compensation effects and the stabilization of the system.
【Fund】: 国家973计划项目(2003CB314901);; 国家863计划项目(2003AA311070);; 国家自然科学基金(60077026)资助项目
【CateGory Index】: TN929.1
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