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光纤的偏振模色散对高速光纤通信系统性能的影响越来越引起了人们的注意 ,对它的测量是必须首先解决的课题 .琼斯矩阵特征值法是ITU TG .6 5 0建议的几种光纤PMD(偏振模色散 )测量方案中的首选方案 .琼斯矩阵特征值法能给出光纤偏振模色散的全面信息 ,并具有很高的测量精度和测量范围 .本文阐述了琼斯矩阵特征值法测量PMD的原理 ,介绍了基于琼斯矩阵特征值法开发的PMD测量系统和测量试验 .该测量系统利用光功率计和步进电机控制的偏振片测量输出光的琼斯矢量 ,代替了G .6 5 0琼斯矩阵特征值法中所建议使用的偏振计 ,降低了PMD测量系统的成本 ,并实现了自动测量
The influence of polarization mode dispersion of optical fiber on the performance of high-speed optical fiber communication system has drawn more and more attention and the measurement of it must be the first problem to be solved. The Jones matrix eigenvalue method is the recommended fiber of ITU TG650 PMD (polarization-mode dispersion) measurement scheme of the first choice. Jones matrix eigenvalue method can give a comprehensive information on the polarization mode dispersion of optical fiber, and has a high measurement accuracy and measurement range.This paper describes the Jones matrix eigenvalue method to measure PMD , Introduces the PMD measurement system and measurement experiment based on the Jones matrix eigenvalue method.The measuring system uses the power meter and the stepper motor controlled polarizer to measure the Jones vector of the output light instead of the G.650 Jones The proposed polarimeter in the matrix eigenvalue method reduces the cost of the PMD measurement system and enables automatic measurement