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A knotted shape core cladding optical fiber interferometer for simultaneous measurement of displacement and temperature
Photonics and Nanostructures - Fundamentals and Applications ( IF 2.7 ) Pub Date : 2020-02-27 , DOI: 10.1016/j.photonics.2020.100778
Changxu Li , Wenlong Yang , Xiaoyang Yu , Jianying Fan , Yanling Xiong , Yuqiang Yang , Linjun Li

A novel composite structured all-fiber sensor was designed and experimentally demonstrated for simultaneous measurement of displacement and temperature. The sensor consists of a knotted shape core cladding optical fiber. The interferometer notch of a knotted shape fiber was found to be highly sensitive to the micro-displacement as well as environmental temperature, while the core-offset fiber was sensitive to temperature only. Thus the different features of these interferometer notchs of two parts can be used to measure the displacement and temperature. The experimental results showed that the sensor exhibited a high displacement sensitivity of −528.57 pm/μm ranges from 0 mm to 0.012 mm. And the temperature sensitivities of the knotted shape core cladding optical fiber were −114.86 pm/℃ and 31.66 pm/℃ ranges from 35 ℃ to 60℃, respectively. Due to the compact size and dual-parameters measurability, the sensor had a great potential in diverse sensing application.



中文翻译:

结形包层光纤干涉仪,可同时测量位移和温度

设计了一种新型的复合结构全纤维传感器,并通过实验证明了它可以同时测量位移和温度。传感器由打结形状的芯包层光纤组成。发现打结形状的光纤的干涉仪切口对微位移以及环境温度高度敏感,而偏移芯的光纤仅对温度敏感。因此,这两部分干涉仪槽口的不同特征可用于测量位移和温度。实验结果表明,该传感器在0毫米至0.012毫米范围内显示出-528.57 pm /μm的高位移灵敏度。打结形状的芯包层光纤的温度敏感性分别为35.60℃至-114.86 pm /℃和31.66 pm /℃。

更新日期:2020-02-27
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