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在 10Gb/s ,尤其是 4 0Gb/s以上高速光纤通信系统中 ,光纤的偏振特性已成为限制系统传输距离的主要因素之一。光纤的偏振效应主要包括偏振模色散和偏振依赖损耗。而脉冲均方根展宽是判断信号传输性能的一个主要物理量。本文讨论了光纤线路偏振模色散与偏振相关损耗的相互作用及对信号脉宽的影响。给出了线路偏振模色散矢量和偏振相关损耗矢量之间的关系式 ,并基于严格的数学方法 ,导出了在光纤偏振模色散和偏振相关损耗共同作用下的信号均方根脉宽变化的解析形式 ,同时考虑了光纤色散 ,啁啾等。该模型可用于分析高阶偏振模色散和偏振相关损耗 ,任意线性光纤通信系统脉冲展宽分析
In 10Gb / s, especially over 40Gb / s high-speed optical fiber communication system, the polarization of optical fiber has become one of the main factors that limit the transmission distance of the system. Polarization effects of optical fiber mainly include polarization mode dispersion and polarization dependent loss. The pulse root mean square broadening is to determine the signal transmission performance of a major physical quantity. This paper discusses the interaction between polarization-mode dispersion and polarization-dependent loss of optical fiber lines and their influence on signal pulse width. The relationship between the polarization mode dispersion vector and the polarization-dependent loss vector is given. Based on the strict mathematical method, the analysis of the signal root mean square root-mean-square (Vm) variation under the combination of polarization mode dispersion and polarization loss Form, taking into account the fiber dispersion, chirp and so on. The model can be used to analyze high-order polarization mode dispersion and polarization-dependent loss. The pulse broadening analysis for any linear optical fiber communication system