Comparative analysis of FBG vibration sensing demodulation methods

Li Yongqian; Wang Yu; Yao Guozhen

doi:10.13756/j.gtxyj.2014.04.015

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Comparative analysis of FBG vibration sensing demodulation methods

- Comparative analysis of FBG vibration sensing demodulation methods
- Study on Optical communication Issue 4, Pages: 46-50(2014)
- 作者机构：
  
  华北电力大学电子与通信工程系
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2014.04.015
  CLC： TN253
- Published：2014，
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[1]李永倩,王宇,姚国珍.光纤光栅振动解调方法对比分析[J].光通信研究,2014(04):46-50.

Li Yongqian, Wang Yu, Yao Guozhen. Comparative analysis of FBG vibration sensing demodulation methods. [J]. (4):46-50(2014)
[1]李永倩,王宇,姚国珍.光纤光栅振动解调方法对比分析[J].光通信研究,2014(04):46-50. DOI： 10.13756/j.gtxyj.2014.04.015.

Li Yongqian, Wang Yu, Yao Guozhen. Comparative analysis of FBG vibration sensing demodulation methods. [J]. (4):46-50(2014) DOI： 10.13756/j.gtxyj.2014.04.015.

摘要

为能依据振动检测要求合理选择FBG（光纤布拉格光栅）振动解调方案

提高FBG振动解调系统性能

文章深入剖析了FBG光强式振动解调系统中影响解调性能的各种因素

通过MATLAB软件对匹配光栅法、边缘滤波法及激光匹配法的系统灵敏度和解调范围进行了对比

分析了改变FBG 3dB带宽时三种方法灵敏度和解调范围的变化趋势

分析结果对合理搭建FBG振动解调系统具有参考价值。

Abstract

In order to select a rational Fiber Bragg Grating（FBG）vibration demodulation scheme in accordance with the vibration detection requirements and enhance the performance of FBG vibration sensing demodulation systems

this paper dissects in depth various factors affecting the system demodulation performances

compares the system sensitivity and demodulation range of matching FBG method

edge filter method and laser matching method by using MATLAB software and analyses the variation trends of the sensitivity and demodulation range of these three methods when 3dB bandwidth of FBG is changed.The results have some value of reference for rationally building an FBG vibration sensing demodulation system.

关键词

光纤布拉格光栅振动解调系统灵敏度解调范围

Keywords

FBGvibration demodulation sensing systemsensitivitydemodulation range

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