Liu Jia, Hou Yulong, Zhang Huixin, Jia Pinggang, Su Shan, Fang Guocheng, Liu Wenyi, Xiong Jijun
Key Laboratory of Instrumentation Science & Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, China.
Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan 030051, China.
Sensors (Basel). 2017 Jan 20;17(1):196. doi: 10.3390/s17010196.
This paper proposes the strategy of fabricating an all fiber wide-range displacement sensor based on the macro-bend coupling effect which causes power transmission between two twisted bending plastic optical fibers (POF), where the coupling power changes with the bending radius of the fibers. For the sensor, a structure of two twisted plastic fibers is designed with the experimental platform that we constructed. The influence of external temperature and displacement speed shifts are reported. The displacement sensor performance is the sensor test at different temperatures and speeds. The sensor was found to be satisfactory at both room temperature and 70 °C when the displacement is up to 140 mm. The output power is approximately linear to a displacement of 110 mm-140 mm under room temperature and 2 mm/s speed at 19.805 nW/mm sensitivity and 0.12 mm resolution. The simple structure of the sensor makes it reliable for other applications and further utilizations, promising a bright future.
本文提出了一种基于宏弯耦合效应制造全光纤宽量程位移传感器的策略，该效应会导致两根扭曲弯曲的塑料光纤（POF）之间的功率传输，其中耦合功率随光纤的弯曲半径而变化。对于该传感器，利用我们搭建的实验平台设计了一种由两根扭曲塑料光纤组成的结构。报告了外部温度和位移速度变化的影响。位移传感器的性能是在不同温度和速度下进行测试的。当位移达到140mm时，发现该传感器在室温及70°C时均表现良好。在室温下，以2mm/s的速度移动时，位移在110mm - 140mm范围内，输出功率与位移近似呈线性关系，灵敏度为19.805nW/mm，分辨率为0.12mm。该传感器结构简单，使其在其他应用和进一步利用方面具有可靠性，前景光明。
