SIMULTANEOUS MEASUREMENT OF STRAIN AND TEMPERATURE WITH POLARIZATION MAINTAINING FIBER BRAGG GRATING LOOP MIRROR
SIMULTANEOUS MEASUREMENT OF STRAIN AND TEMPERATURE WITH POLARIZATION MAINTAINING FIBER BRAGG GRATING LOOP MIRROR
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DOI：
10.1080/10739149.2013.865213
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发表时间：
2014-03
影响因子：
1.6
通讯作者：
Qi Wang;J. Xia;Yong Zhao;X. Liu;Peng Wang;Ya‐nan Zhang;Chunheng Sang;Li Wang
中科院分区：
文献类型：
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作者：
Qi Wang;J. Xia;Yong Zhao;X. Liu;Peng Wang;Ya‐nan Zhang;Chunheng Sang;Li Wang
□提出并演示了一种基于保偏光纤布拉格光栅环路镜的应变和温度同步测量新方法。传感头由光纤环形反射镜和保偏光纤组成的光纤布拉格光栅段组成。保偏光纤中光纤光栅的布拉格波长沿慢轴和快轴分布，对应变和温度的敏感性随光纤环镜干涉峰值波长的变化而变化。该光纤环镜的温度灵敏度为0.1167 nm/°C，应变灵敏度为0.0093 nm/μ λ，通过对其布拉格波长和干涉峰位移的监测，实现了约0.009°C的温度测量分辨率和1.08 μ λ的应变测量分辨率。
□ A novel simultaneous method of strain and temperature measurement based on a polarization maintaining fiber Bragg grating loop mirror is proposed and demonstrated. The sensing head was composed of a fiber loop mirror and a section of fiber Bragg grating made of a polarization maintaining fiber. The Bragg wavelengths of the fiber grating in the polarization maintaining fiber were along slow and fast axis showing different sensitivities to strain and temperature with the interferometric peak wavelength of the fiber loop mirror. By monitoring the shifts of the Bragg wavelength and interferometric peak of the fiber loop mirror, with its temperature sensitivity of 0.1167 nm/°C and strain sensitivity of 0.0093 nm/μϵ, a temperature measurement resolution about 0.009°C and a strain measurement resolution of 1.08 μϵ was achieved theoretically and experimentally.