Teng Chuanxin, Yu Fangda, Deng Shijie, Liu Houquan, Yuan Libo, Zheng Jie, Deng Hongchang
Photonics Research Centre, Guilin University of Electronic Technology, Guilin 541004, China.
Guangxi Key Laboratory of Automatic Detection Technology and Instrument Foundation (No.), Guilin 541004, China.
Sensors (Basel). 2019 Jun 3;19(11):2531. doi: 10.3390/s19112531.
A simple structure and easily fabricated displacement sensor was proposed and demonstrated based on a bending-induced fiber interferometer. In the design, the fiber interferometer was formed only by bending the single-mode fiber into a small U-shape without splicing, tapering, or heating pre-processing, which effectively reduces the complexity of the fabrication process, greatly enhances the mechanical strength of the sensor, and lowers the cost in the displacement sensing applications. The displacement sensing performances for the sensor with different bending radii of 3.3 mm, 4.4 mm, 5.0 mm, and 6.3 mm were investigated. Experimental results showed that the sensor had a good linear response, and for the bending radii of 3.3, 4.4, 5.0, and 6.3 mm, the proposed sensors showed high sensitivities of 134.3, 105.1, 120.9, and 144.1 pm/μm, respectively.
基于弯曲诱导光纤干涉仪，提出并演示了一种结构简单且易于制造的位移传感器。在该设计中，光纤干涉仪仅通过将单模光纤弯曲成小U形而形成，无需拼接、锥形化或加热预处理，这有效降低了制造过程的复杂性，大大提高了传感器的机械强度，并降低了位移传感应用中的成本。研究了弯曲半径分别为3.3毫米、4.4毫米、5.0毫米和6.3毫米的传感器的位移传感性能。实验结果表明，该传感器具有良好的线性响应，对于3.3、4.4、5.0和6.3毫米的弯曲半径，所提出的传感器分别显示出134.3、105.1、120.9和144.1皮米/微米的高灵敏度。
