一种基于平面光波导线路的PMD补偿器的性能分析

为了解决长途高速通信系统中偏振模色散对系统性能的影响，提出了一种高度集成化的偏振模色散（PMD）光学补偿解决方案.基于无转动部件的偏振控制器（PC）原理，利用硅平面光波导线路（PLC）技术，实现了一个无限偏振控制系统，从而完成对偏振模色散的补偿.对该模型利用PMD向量的级联规则理论，通过蒙特卡洛统计方法分析得出，三段级联的PLC系统与麦克斯韦理论分布基本吻合，并接近十二段传统非线性晶体型PMD补偿器的补偿特性.级联式的PLC系统是传统PMD补偿器的一种较好的集成化升级方案.

Statistical analysis of planar lightwave circuit PMD compensator

A novel cascaded planar lightwave circuit(PLC) based polarization-mode dispersion(PMD) compensator was proposed to compensate the PMD for long haul high speed communications,and a detailed statistical analysis of PMD generated by cascaded PLC circuits was presented.This kind of PLC on silicon substrate offered a promising on-chip integrated solution.Using the concatenation rule of PMD vectors derived by Gisin and Pellaux,the distributions of the first-order PMD produced by various multiple-stage PLC circuits were obtained by Monte Carlo simulation with respect to the phase shift introduced by heating elements in the circuits.The generated PMD was compared with a standard Maxwell distribution and that of a 12-stage nonlinear crystal based PMD compensator.The performance of the 3-stage cascaded PLC circuit was close to that of a crystal-based PMD compensator,while having significant reduction in packaged size and enhancement in stability.