One-dimensional film-micro-cavity structure design for an asymmetrical interleaver filter  

作　　者：于帅 张娟 

机构地区：[1]Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University

出　　处：《Optoelectronics Letters》2010年第2期85-88,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.10804070);the Innovation Program of Shanghai Municipal Education Commission (No.09YZ06);Shanghai Leading Academic Discipline Project and STCSM (Nos.S30108 and 08DZ2231100)

摘　　要：Based on the theory of one-dimensional photonic crystal,an asymmetrical interleaver filter composed of thin-film glass cavities is designed.Three thin-film glass cavities are cascaded in the structure.Each cavity is formed by evaporating several layers of reflecting films on two surfaces of the glass medium.Compared with other proposed structures,this interleaver filter is very simple and easy to realize,and it has flat passband and stopband.A design example of a 50 GHz interleaver filter with the duty cycle of 1:5 is presented.The influence of the structural parameters of each reflecting film(including the glass cavity) on the spectral performance is discussed.And the design results with duty cycles of 1:3 and 1:4 are also shown and analyzed.Based on the theory of one-dimensional photonic crystal, an asymmetrical interleaver filter composed of thin-film glass cavities is designed. Three thin-fill glass cavities are cascaded in the structure. Each cavity is formed by evaporating several layers of reflecting fills on two surfaces of the glass medium. Compared with other proposed structures, this intcrleaver filter is very simple and easy to realize, and it has flat passband and stopband. A design example of a 50 GHz inteflcaver filter with the duty cycle of 1：5 is presented. The influence of the structural parameters of each reflecting fill （including the glass cavity） on the spectral performance is discussed. And the design results with duty cycles of 1：3 and 1： 4 are also shown and analyzed.

关 键 词：一维光子晶体 结构设计 交织器 非对称 微腔 电影 薄膜玻璃 理论设计 

分 类 号：O734[理学—晶体学]