微波光子滤波器的结构原理和设计方法
首发时间:2011-05-20
摘要: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。
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Structure principles and design methods of microwave photonic filter
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.
Keywords: Microwave photonic filter Q value cascade negative tap
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