可变可转单波片偏振控制器研究  

Research of Polarization Controller Based on Single Rotatable-Variable Waveplate

作　　者：李伟文[1] 金晓峰[1] 章献民[1] 陈抗生[1] 邹英寅[1] 

机构地区：[1]浙江大学信息与电子工程学系,浙江杭州310027

出　　处：《光子学报》2006年第1期114-117,共4页Acta Photonica Sinica

基　　金：浙江省科技计划重点项目(No.2004C21G2010007)资助

摘　　要：基于PLZT波片的相对相位延迟量可变性和其折射率椭球主光轴的可转性,提出后反馈单个PLZT可变可转波片偏振控制器.采用模拟退火算法进行扰动寻优,仿真结果显示这种控制器是有效的:能将任意输入偏振态转换为稳定的线偏振光而其光强达到总光强的98%以上,在控制过程中相移能在限定范围内变化,避免了由复位重置可能引起的波动·The electro-optic effect and the field distribution of Lead lanthanum zirconate titanate （PLZT） transparent ferroelectric ceramic waveplates are reviewed. The feedback single rotatable-variable PLZT waveplate polarization controller is constructed based on the variable retardation and rotatable axes of a PLZT waveplate. For this controller the simulated annealing algorithm is applied to dither optimization considering the limit of phase shift and the endless rotatable axes. Simulated research results show that this controller can transform any varying general input polarization state into an arbitrary linear output polarization state and in the desired direction more than 98% of total light intensity is attained. On controlling the phase shift can vary within 0-2π, so the fluctuation caused by resetting can be avoided.

关 键 词：光纤通信 偏振控制器 电光效应 PLZT 可变可转波片 

分 类 号：TN929.11[电子电信—通信与信息系统]