FBG-EFPI sensor for large strain measurement with low temperature crosstalk

被引：11

作者：

Guo, Teng ^{[1
]}

Zhang, Tianxi ^{[1
]}

Qiao, Xueguang ^{[1
]}

机构：

[1] Northwest Univ, Dept Phys, Xian, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2020年 / 473卷

基金：

中国国家自然科学基金;

关键词：

FBG-FP; Fiber optics sensors; Intensity demodulation; HIGH-RESOLUTION; LASER;

D O I：

10.1016/j.optcom.2020.125945

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel optical fiber strain sensor, consisting of a section of fiber Bragg grating cascaded with a Fabry-Perot interferometer is proposed and experimentally demonstrated. The sensing principle relies on the detection of strain-induced changes of the optical intensity. With the assistance of a 3d printed spring, our sensor structure enables a large strain measuring range up to 1.5(boolean AND)10(7) mu epsilon. the temperature response has also been detected, and the temperature-induced intensity perturbation is less than 0.01dB/degrees C from 20 degrees C to 100 degrees C. The proposed strain sensor has many advantages such as large measuring range, low temperature cross-sensitivity, simple structure, and ease of fabrication, which make it a competitive candidate for strain measurement under a certain temperature.

引用

页数：6

共 20 条

[11] Simultaneous strain and temperature measurement of advanced 3-D braided composite materials using an improved EFPI/FBG system [J].