Infinite impulse response-based cascaded microwave photonic filters

Xu Enming; Wang Qi; Wang Fei; Li Peili

doi:10.13756/j.gtxyj.2014.05.014

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Infinite impulse response-based cascaded microwave photonic filters

- Infinite impulse response-based cascaded microwave photonic filters
- Study on Optical communication Issue 5, Pages: 45-47(2014)
- 作者机构：
  
  1. 南京邮电大学光电工程学院
  2. 重庆理工大学光电信息学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2014.05.014
  CLC： TN713
- Published：2014，
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[1]徐恩明,王琪,王飞,李培丽.基于无限冲激响应的微波光子级联滤波器[J].光通信研究,2014(05):45-47+58.

Xu Enming, Wang Qi, Wang Fei, et al. Infinite impulse response-based cascaded microwave photonic filters. [J]. (5):45-47(2014)
[1]徐恩明,王琪,王飞,李培丽.基于无限冲激响应的微波光子级联滤波器[J].光通信研究,2014(05):45-47+58. DOI： 10.13756/j.gtxyj.2014.05.014.

Xu Enming, Wang Qi, Wang Fei, et al. Infinite impulse response-based cascaded microwave photonic filters. [J]. (5):45-47(2014) DOI： 10.13756/j.gtxyj.2014.05.014.

摘要

为进一步拓展微波光子滤波器的FSR（自由谱范围）和提高滤波器的Q值

进行了IIR（无限冲激响应）滤波器分别与FIR（有限冲激响应）滤波器和IIR滤波器级联的研究。分析了两种级联结构的滤波特性并给出了相应的传输函数。IIR滤波器与FIR滤波器级联后的FSR与Q值是IIR滤波器的2n倍;IIR滤波器与IIR滤波器级联后的FSR是各个IIR滤波器的FSR的最小公倍数。用Matlab软件仿真验证了两种级联结构的频率响应特性

实验验证了IIR滤波器与IIR滤波器的级联特性。IIR滤波器与IIR滤波器的级联有望实现宽频率范围内的单通带滤波器。

Abstract

To further expand the Free Spectrum Range（FSR）and increase the Qfactor of microwave photonic filters

this paper conducts researches on an Infinite Impulse Response（IIR）filter cascaded respectively with a Finite Impulse Response（FIR）filter and an IIR filter.Then

it analyzes the filtering characteristics of these two cascaded structures and derives the corresponding transfer functions.In the former case

the FSR and the Qfactor are 2n times that of the IIR filter and in the latter case

the FSR is the least common multiple of that of each IIR filter.It simulates and verifies the frequency response characteristics of the two structures using the Matlab

and experimentally verifies the cascaded characteristics of an IIR filter with an IIR filter.The cascading of an IIR with an IIR is expected to realize single-passband filtesrs in a wide frequency range.

关键词

微波光子滤波器光学信号处理半导体光放大器

Keywords

microwave photonicfilteroptical signal processingsemiconductor optical amplifier

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