文章基本信息

标题：A high sensitive fiber-optic strain sensor with tunable temperature sensitivity for temperature-compensation measurement
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作者：Jie Hu ; Hui Huang ; Min Bai 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2017
卷号：7
期号：1
DOI：10.1038/srep42430
语种：English
出版社：Springer Nature
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/°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 × 10(3) με (with a sensing length of 21.5 mm), a detection limit of 5.7 × 10(-3) με, and a maximum operating frequency of 1.18 KHz were demonstrated. This sensor is promising for compensating the thermal-expansion of various target objects.