基于可调谐光纤法珀滤波器的FBG应变测量实验研究  

Research on the Measurement of FBG Strain Sensor based on the Tunable Fiber Fabry-Pérot Filter

作　　者：张秀勇 杨水旺 郭洪岩 张庆柏 鲁宁 ZHANG Xiu-yong;YANG Shui-wang;GUO Hong-yan;ZHANG Qing-bai;LU Ning(Beijing Zhenxing Institute of Metrology&Measurement,Beijing 100074,China)

机构地区：[1]北京振兴计量测试研究所,北京100074

出　　处：《宇航计测技术》2019年第B05期52-55,共4页Journal of Astronautic Metrology and Measurement

摘　　要：本文介绍了基于可调谐法珀滤波器的FBG解调技术,说明了其优缺点及其适用的场合。然后,采用等强度梁对FBG应变传感器进行了标定,该FBG应变传感器在20℃时的应变灵敏度系数为1. 176pm·με^(-1)。最后,对某无人机模型的机翼进行了应变实验测试,获得了比较理想的测量结果。此实验也证明了FBG应变传感器适用于一些低速、缓变、高精度、大容量测量的场合,具有比较广阔的应用前景。The demodulation technologies of tunable fiber Fabry-Perot filter for the fiber Bragg grating! FBG) are introduced,and their advantages and disadvantages and suited occasion are summarized. Then,the FBG strain sensor is calibrated using the equal strength beam. The sensitivity coefficient of the FBG strain sensor is 1. 176pm·με^-1at 20t. Lastly,the strain of the aerofoil of the unmanned aerial vehicles model is measured,and a satisfied result of measurement is obtained. So,it is proved that the FBG strain sensors are suitable for some low-speed,slow-change,high-precision and large-capacity measurement occasions,and have a broad application prospect.

关 键 词：光纤布喇格光栅 等强度梁 应变传感器 可调谐光纤法珀滤波器 

分 类 号：TN253[电子电信—物理电子学]