A high-sensitivity temperature sensor based on integrated dual-hole fiber Fabry-Perot Interferometer

被引：0

作者：

Li, Song ^{[1
]}

Zhang, Xu ^{[1
]}

Lyu, Mingyang ^{[1
]}

Yang, Xinghua ^{[1
]}

Zhu, Zheng ^{[1
]}

机构：

[1] College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin,150001, China

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 04期

关键词：

Fabry-Perot interferometers - Cavity resonators - Fiber optic sensors - Fibers - Temperature measurement;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to solve the problem that the sensor has higher stability and smaller size, this paper presents a high-sensitivity temperature sensor based on a dual-hole fiber-parallel dual-Fabry-Perot (F-P) interferometer. The sensor consists of a seven-core fiber, a double-hole fiber, and a D-shaped fiber. Two independent parallel F-P interferometers are formed. We have experimentally verified the interferometer sensor. The results show the temperature sensitivity of the F-P cavity sealed by glue is -110.4 pm/℃, and the temperature sensitivity of the F-P cavity sealed by D-shaped fiber is 3.2 pm/℃. In addition, the length changes of the two F-P interferometers due to the stress changes are almost the same, so the stress sensitivities of the two F-P interferometers are similar which were 1.1 pm/μΕ and 1.4 pm/μΕ respectively. This structure can be used for simultaneous measurement of temperature and stress, and used for high sensitivity temperature measurement for stress compensation. Copyright ©2020 Journal of Harbin Engineering University.

引用

页码：601 / 606