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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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.~~
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
polarization mode dispersion, OTDM transmission system, degree of polarization, adaptive compensation
