微波光子滤波器的结构原理和设计方法

微波光子滤波器的结构原理和设计方法

内容简介：本文主要研究了微波光子滤波器的滤波原理，分析了滤波器的基本结构，并针对目前的研究热点介绍微波光子滤波器的设计方法。其一项重要指标是高品质因数Q，其大小决定了滤波器的选频性能，分别以光纤环和光纤光栅作为不同的延时单元来举例，列出了几种典型高 Q 值微波光子滤波器的结构，并分析滤波器级联的原理及利用正抽头得到负抽头滤波器的方法。

Abstract：This work demonstrates the filtering principle and basic structure of microwave photonic filter, and describes the design theory of the popular microwave photonic filter . Quality Factor Q is an important indicator, and its size determines the performance of filter frequency selection. this paper illustrates with fiber ring and fiber grating as different time delay unit, lists several typical high-Q microwave photonic filter structure, and analyses the principle of filter cascade;then introduces some methods of generating the negative tap filters.

作者：范文文, 忻向军, 张琦,

关键词：微波光子滤波器, Q值, 级联, 负抽头