偏振模色散对输出脉冲波形影响的分析与仿真  

The Impact of Polarization Mode Dispersion on Output Envelope

作　　者：孙学明[1] 顾畹仪[1] 徐大雄[1] 

机构地区：[1]北京邮电大学电子信息工程学院

出　　处：《北京电子科技学院学报》2004年第2期1-7,共7页Journal of Beijing Electronic Science And Technology Institute

摘　　要：偏振模色散已成为限制光纤通信系统传输速率和距离的一大障碍,特别是当光纤通信系统单信道传输速率达到40Gb/s或以上时,二阶偏振模色散效应已不可忽略,它严重影响了信号传输质量,造成数字通信的码间干扰。本文根据单模光纤的偏振模色散时域脉冲响应公式,借助实验室开发的光纤通信系统仿真软件,分析了一阶、二阶偏振模色散对输出场中脉冲波形的影响,并验证出仿真实验与理论分析结果有很好的一致性。Polarization mode dispersion (PMD) has become an obstacle of the development of optical communication system. As the bit-rate of a single channel in optical fiber transmission reaches 40Gb/s or beyond, the effect of the second order PMD can't be ignored. It will result in intersymbol interference (ISI) and corrupts, which affect severely the performance of the system. Based on the formula of the PMD fiber's time impulse response, the impact of the first and the second order PMD on output envelope is analyzed in this paper. Emulation program of optical communication system is developed and applied. The results show that the theoretical analysis agreed with the results of emulation.

关 键 词：偏振模色散 PMD 传输函数 时域脉冲响应 光纤通信 

分 类 号：TN929.11[电子电信—通信与信息系统]