一种基于IIR光交错滤波器的设计方法  

A Novel Design Method for Interleaver Based on IIR

作　　者：杨小伟[1] 张娟[2] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]上海大学特种光纤与光接入网省部共建重点实验室,上海200072

出　　处：《光子学报》2009年第9期2205-2209,共5页Acta Photonica Sinica

基　　金：国家自然科学基金(10804070)资助

摘　　要：基于数字信号处理中的IIR理论,提出了一种基于MGTI型interleaver的新颖设计方法,可以简便地得到所求的各组结构参量.通过z变换简化透射方向和反射方向光波电矢量的表达式,分析了零极点位置对整个滤波器的影响,利用IIR中椭圆滤波器的设计方法得到Gires-Tournois腔的腔长、臂长差和Gires-Tournois腔各镜面的反射率.并给出了利用两个双镜Gires-Tournois腔替代两面全反镜所得到的三组不同参量,比较了采用不同Gires-Tournois腔所得到的相应的1、3、5、7、9阶interleaver的模拟仿真结果.Based on IIR structure in digital signal processing,a novel design method for interleaver based on MGTI was presented. The structure parameters could be obtained conveniently using this method. Z transform can be used to simplify express of light-wave electricity vector, in transmission and reflection. The influence of the zero and pole location on the interleaver was analyzed and the design method of ellipse filter was adopted to get the length of Gires-Tournois etalon （GTE） ,interferometer arm length difference and GTE front surface mirror reflectance. Three different parameters obtained using two mirror GTEs in place of two reflecting mirrors were given. And the simulation results, of which order is respectively 1,3,5, 7,9 are obtained and compared by using different GTEs.

关 键 词：密集波分复用 光交错滤波器 无限脉冲响应 Gires—Tournois谐振腔 

分 类 号：TN929.11[电子电信—通信与信息系统]