基于布里渊动态光栅的保偏光纤中温度和应变的传感机制研究

徐志钮; 赵丽娟; 陈飞飞; 车小霞; 郭文翰; 王贺晴

doi:doi:10.3788/gzxb20194808.0806001

光子学报, 2019, 48 (8): 0806001, 网络出版: 2019-11-28

基于布里渊动态光栅的保偏光纤中温度和应变的传感机制研究

Temperature and Strain Sensing Mechanism in Polarization Maintaining Fiber Based on Brillouin Dynamic Grating

论文大纲

徐志钮 ^*赵丽娟陈飞飞车小霞郭文翰王贺晴

作者单位

华北电力大学电气与电子工程学院, 河北保定 071003

保偏光纤温度和应变传感机制波长波长差拍长 Polarization-maintaining fiber Temperature and strain Sensing mechanism Wavelength Difference in wavelength Beat length

摘要

对保偏光纤中基于布里渊动态光栅的温度和应变的传感机制进行了探索.从保偏光纤两正交偏振轴的传输特性出发, 分别研究了布里渊动态光栅的波长、波长差以及拍长与温度和应变的关系.研究结果表明, 波长的对数与光纤温度近似成线性关系, 波长的相对变化量与光纤应变成线性关系; 两轴波长差、拍长的倒数与温度和应变近似成线性关系.本文研究结果为基于布里渊动态光栅的保偏光纤分布式温度和应变的传感指明了潜在的研究方向.

Abstract

The temperature and strain sensing mechanisms based on Brillouin dynamic grating in polarization-maintaining fiber are explored. Based on the transmission characteristics of two orthogonal polarization axes of polarization-maintaining fibers, the relationships between the wavelength, the wavelength difference, the beat length of Brillouin dynamic grating, and temperature and strain in fiber are investigated. The results reveal that the logarithm of the wavelength is nearly linear with the fiber temperature, and the relative change in the wavelength are linear with the strain in the fiber. The difference in wavelength between two-axes and the reciprocal of the beat length is approximately linear with the temperature and strain. This paper points out potential research directions for the polarization-maintaining fiber distributed temperature and strain sensing based on Brillouin dynamic grating.

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徐志钮, 赵丽娟, 陈飞飞, 车小霞, 郭文翰, 王贺晴. 基于布里渊动态光栅的保偏光纤中温度和应变的传感机制研究[J]. 光子学报, 2019, 48(8): 0806001. XU Zhi-niu, ZHAO Li-juan, CHEN Fei-fei, CHE Xiao-xia, GUO Wen-han, WANG He-qing. Temperature and Strain Sensing Mechanism in Polarization Maintaining Fiber Based on Brillouin Dynamic Grating[J]. ACTA PHOTONICA SINICA, 2019, 48(8): 0806001.

基于布里渊动态光栅的保偏光纤中温度和应变的传感机制研究

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