A high sensitive fiber-optic strain sensor with tunable temperature sensitivity for temperature-compensation measurement

被引：14
|
作者：
Hu, Jie [1 ]
Huang, Hui [1 ]
Bai, Min [1 ]
Zhan, TingTing [1 ]
Yang, ZhiBo [1 ]
Yu, Yan [1 ]
Qu, Bo [2 ]
机构：
[1] Dalian Univ Technol, Dept Elect Sci & Technol, Dalian 116024, Peoples R China
[2] Jordan Valley Semicond Ltd, Shanghai 201216, Peoples R China
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
基金：
中国国家自然科学基金;
关键词：
PHOTONIC CRYSTAL FIBER;
D O I：
10.1038/srep42430
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A high sensitive fiber-optic strain sensor, which consists of a cantilever, a tandem rod and a fiber collimator, was proposed. The tandem rod, which transfer the applied strain to the cantilever, was used for tuning the temperature sensitivity from -0.15 to 0.19 dB/degrees C via changing the length ratio of the rods. Moreover, due to the small beam divergence of the collimator, high strain sensitivity can be realized via incident-angle sensitive detection-mechanism. A strain detection-range of 1.1 x 10(3) mu epsilon (with a sensing length of 21.5 mm), a detection limit of 5.7 x 10(-3) mu epsilon, and a maximum operating frequency of 1.18 KHz were demonstrated. This sensor is promising for compensating the thermal-expansion of various target objects.
引用
收藏
页数：8
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