基于光纤光栅定位的全分布式光纤位移传感器
Distributed Displacement Sensor Based on Fiber Bragg Grating

针对深部岩体、边坡滑移等大量程位移难于测量的问题，提出了一种基于光纤光栅定位的光时域反射位移测量原理，并开发了基于光纤光栅的全分布式光纤位移传感器．实验结果表明，基于光纤光栅的全分布式位移传感原理可行，研制的2 种全分布式位移传感器均能实现位移的测量，位移灵敏度系数高达5.21，并且可通过结构设计提高位移传感灵敏度与量程．
Wide-range displacement is difficult to be measured for slope sliding and rock in depth．Therefore，a fully distributed displacement sensing principle based on fiber Bragg grating(FBG) is proposed and explored in this paper． Distributed displacement sensor(DDS)based on FBG is designed and investigated．Experimental results show that this displacement principle based on FBG is feasible and displacement can be tested by both kinds of DDS．The sensitivity coefficient of displacement is as high as 5.21 and can be improved by using smart structural design