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光格型FIR奇偶交错滤波器设计
引用本文:张瑞峰,胡智勇,葛春风,王书慧,李世忱.光格型FIR奇偶交错滤波器设计[J].量子电子学报,2005,22(5):799-805.
作者姓名:张瑞峰  胡智勇  葛春风  王书慧  李世忱
作者单位:天津大学精密仪器与光电子工程学院教育部光电技术重点实验室,天津,300072
摘    要:用光格型有限冲激响应(FIR)滤波器模型在z变换域对耦合器级联形式的奇偶交错滤波器进行了理论分析,根据由目标滤波函数求解光格型阵列具体参数(单位时延△τ和耦合角θk)的算法编写了相应的计算程序,讨论了通带和阻带边界归一化频率位于0.5附近的z域低通滤波器和光域奇偶交错滤波器的对应关系.在此基础上设计了a~e五种滤波器,其幅频响应特性曲线类似矩形,通带顶部平坦、纹波接近于0 dB,隔离度可以达到50 dB.

关 键 词:光通信  奇偶交错滤波器  光格型FIR滤波器  矩形度  平顶频响
文章编号:1007-5461(2005)05-0799-07
收稿时间:2004-08-30
修稿时间:2004年8月30日

Design of optical lattice FIR interleaver
ZHANG Rui-feng,HU Zhi-yong,GE Chun-feng,WANG Shu-hui,LI Shi-chen.Design of optical lattice FIR interleaver[J].Chinese Journal of Quantum Electronics,2005,22(5):799-805.
Authors:ZHANG Rui-feng  HU Zhi-yong  GE Chun-feng  WANG Shu-hui  LI Shi-chen
Abstract:Cascaded coupler interleaver using optical lattice FIR filter model in z-transform is theoretically analyzed. Programming based on the algorithm to resolve optical lattice array concrete parameter (unit time delay △T and coupler angle θk) for objective function, corresponding relationship between z domain low-pass filter with about 0.5 boundary normalized frequency for pass band and optical domain interleaver are discussed. Five kinds of filters (from a to e) are designed, with rectangle-like amplitude frequency response characteristic curve, fiat top pass band, nearly 0 dB ripples, and isolation up to 50 dB.
Keywords:optical communication  Interleaver  optical lattice FIR filter  rectangle degree  flat top frequency response
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