超高Q微波光子滤波器的研究进展  

Research Progress of Ultrahigh-Q Microwave Photonic Filters

作　　者：陈鹏宇[1] 刘洁[2] 程凌浩[3] 李朝辉[3] 吕超[4] 余思远[1] 

机构地区：[1]中山大学物理工程与技术学院,广州510275 [2]中山大学移动信息工程学院,珠海519082 [3]暨南大学光子技术研究所,广州510632 [4]香港理工大学电子及资讯工程系,香港999077

出　　处：《数据采集与处理》2014年第6期949-956,共8页Journal of Data Acquisition and Processing

基　　金：国家重点基础研究发展计划("九七三"计划)(2012CB315702)资助项目

摘　　要：微波光子滤波器是一种具有射频滤波功能的光学子系统。相对于普通的电域射频滤波器件,微波光子滤波器具有高带宽、低损耗以及不受电磁干扰影响等优点。Q(即品质因数)是衡量带通滤波器性能的主要参数之一,其大小反映了滤波器的频率选择特性。已报道的各种提高微波光子滤波器Q的方法中,基于多级滤波器级联的结构能够显著提高滤波器的Q,因而得到广泛关注。本文以超高Q为主线,综述了基于级联结构的微波光子滤波器的研究进展,并对微波光子滤波器的下一步研究进行了展望。Microwave photonic filters,which have attracted great research interest in the past few decades,are photonic subsystems carrying out functions of radio frequency（RF）filtering.Their advantages mainly include high bandwidth,low insertion loss,immunity to electromagnetic interference,etc.Quality factor（Q）value,which determines the performance of the frequency selectivity,is one of the most desired features of microwave photonic filters.Among various structures proposed so far to improve Q values of microwave photonic filters,multistage filters with cascaded structures have attracted lots of interests,which can increase the Q values greatly.The newly proposed structures on ultrahigh-QIIR microwave photonic filters with architectures of cascaded multi-stage filters are reviewed.Future directions of research in this area are also discussed.

关 键 词：微波光子 滤波器 Q值 无限冲激响应 有限冲激响应 游标效应 

分 类 号：TN713.1[电子电信—电路与系统]