Simultaneous measurement of temperature and static strain using FBG Fabry-Perot interferometer in polarization maintaining fiber
Simultaneous measurement of temperature and static strain using FBG Fabry-Perot interferometer in polarization maintaining fiber
复制标题
使用 FBG 法布里-珀罗干涉仪同时测量保偏光纤中的温度和静态应变
DOI：
10.1117/12.2058842
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and Nobuaki Takahashi,
中科院分区：
文献类型：
--
作者：
Ryotaro Uchimura;Atsushi Wada;Shingo Tekuramori;Makoto Takeuchi;Osamu Tukida;Satoshi Tanaka;and Nobuaki Takahashi,
光纤布拉格光栅（FBG）被用作温度和静态应变测量的传感头。然而，一个标准的FBG传感器，这是建立在单模光纤，不能同时测量温度和静态应变，因为传感器之间有交叉敏感。用构造在保偏光纤（PM-FBG）上的FBG代替标准FBG可以解决交叉敏感问题。在本文中，我们报告的同时测量温度和静态应变的传感分辨率的改进。介绍了一种由PM-FBG构成的法布里-珀罗干涉仪（PM-FBG-FPI）作为传感头。PM-FBG-FPI反射光谱的精细结构能够实现波长偏移的高分辨率检测。实验证明了由此产生的高分辨率测量。
A Fiber Bragg Gratings(FBG) have been used as a sensor head for measurement of temperature and static strain. However, a standard FBG sensor, which is constructed on single-mode fiber, cannot simultaneously measure both temperature and static strain since the sensor has cross-sensitivity between them. The cross-sensitivity problem can be solved by using an FBG constructed on a polarization maintaining fiber(PM-FBG) instead of a standard FBG. In this paper, we report improvement on the sensing resolution for the simultaneous measurement of temperature and static strain. An Fabry-Perot interferometer constructed with PM-FBG(PM-FBG-FPI) is introduced as a sensor head. The fine structure of an PM-FBG-FPI reflection spectrum enables high resolution detection of wavelength shifts. The resulting high resolution measurement is demonstrated experimentally.