作　　者： ;

机构地区： 上海理工大学光电学院

出　　处： 《激光技术》 2009年第4期397-399,共3页

摘　　要： 为了研究偏振模色散所致光纤链路传输损伤,采用基于耦合非线性薛定谔方程的分步傅里叶法数值分析了1阶和2阶偏振模色散对光纤链路中非归零码、归零码及啁啾归零码脉冲信号的影响。结果表明,偏振模色散造成光纤链路性能的严重恶化,成为限制其性能的最主要因素之一。而且随着工作速度的提高,高阶偏振模色散的影响更大;采用合适的码型能在一定程度上减轻偏振模色散的影响,其中啁啾归零码略优于归零码,而归零码优于非归零码。 In order to study the performance deterioration induced by polarization mode dispersion （PMD） in a fiber link, the effect of 1 st order and 2nd order PMD on the non-return-to-zero （ NRZ）, return-to-zero （RZ） and chirped return-to-zero （CRZ） codes was analyzed by means of the split-step Fourier method based on the coupled nonlinear Schrtldinger equation. The analytical results show that the performance of the optical fiber link is severely deteriorated by PMD, one of the main factors limiting the property of the link. And with the increase of the working speed, the influence of higher-order PMD becomes worse. The effect of PMD can be partially reduced for a right code pattern, i. e. , CRZ code is a little better than RZ code and RZ code is better than NRZ code.

关 键 词： 光纤光学 偏振模色散 非归零码 归零码 啁啾归零码

领　　域： [电子电信] [电子电信]