Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method

YAO Guo-zhen; YIN Yi-meng; LI Yong-qian; FAN Han-bai

doi:10.13756/j.gtxyj.2021.04.009

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Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method

- Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method
- Study on Optical Communications Issue 4, Pages: 41-49(2021)
- 作者机构：
  
  a.华北电力大学　电子与通信工程系，河北保定　071003
  b.华北电力大学　河北省电力物联网技术重点实验室，河北保定　071003
  c.华北电力大学　保定市光纤传感与光通信技术重点实验室，河北保定　071003
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2021.04.009
  CLC： TN29
- Published：10 August 2021，
  
  Received：17 November 2020，
扫描看全文
YAO Guo-zhen, YIN Yi-meng, LI Yong-qian, et al. Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method. [J]. Study on Optical Communications (4):41-49(2021)
DOI：

YAO Guo-zhen, YIN Yi-meng, LI Yong-qian, et al. Summary of Research on High Precision Fiber Grating Wavelength Demodulation Method. [J]. Study on Optical Communications (4):41-49(2021) DOI： 10.13756/j.gtxyj.2021.04.009.

摘要

光纤布拉格光栅传感器采用波长变化反映被测量大小，因此提高光纤光栅的波长解调精度具有重要意义。传统解调方法大多结构单一导致性能受限且对于重叠谱和畸变谱的测量精度欠佳，限制了解调精度的提升。高精度波长解调方法主要解决系统温度稳定性差和寻峰精度低等问题。文章介绍了光通信中光纤光栅波长解调技术的应用，综述了近几年高精度光纤光栅波长解调方法，包括参考光纤光栅、迈克尔逊干涉仪和气室的硬件方法，以及基于神经网络和基于粒子群的软件方法；阐述了每种解调方法的原理以及在光纤光栅传感领域应用时的优缺点，分析了光纤光栅解调方法存在的问题及发展趋势。

Abstract

The fiber Bragg grating sensor measures the value according to the wavelength variation. Therefore

it is of great significance to improve the wavelength demodulation accuracy of the fiber grating. Most of the traditional demodulation methods have a single structure

which results in poor measurement accuracy for overlapped spectrum and distortion spectrum

and limits the improvement of demodulation accuracy. The high-precision wavelength demodulation method mainly solves the problems of poor system temperature stability and low peak-finding accuracy. This paper introduces the application of fiber grating wavelength demodulation technology in communication

and reviews the high-precision fiber grating wavelength demodulation methods in recent years

including hardware methods of reference fiber gratings

Michelson interferometers and gas cells

and software methods based on neural networks and particle swarms. The principle of each demodulation method and its advantages and disadvantages in the field of fiber grating sensing are described

and the problems and development trends of fiber grating demodulation methods are analyzed.

关键词

光纤布拉格光栅解调精度硬软件方法

Keywords

fiber Bragg gratingdemodulation accuracyhardware and software method

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