聚合物封装的高灵敏度光纤光栅压力传感器

High-sensitivity Fiber Grating Pressure Sensor with Polymer Jacket

将光纤光栅封装于一种有机聚合物基底中 ,并对其压力传感特性和温度交叉敏感特性进行了研究 ,由于基底材料的带动作用 ,封装后的光纤光栅对于压力的灵敏度提高为裸光栅的 31 7倍 ,压力灵敏系数可达 - 6 2 8× 10 - 5/MPa。这种技术不仅操作简单 ,而且同时具有压力增敏和保护光栅双重效果。

The pressure and the cross temperature properties of the fiber grating pressure sensor with a polymer jacket is studied. Because of the driving effect of the polymer substrate, the measured pressure sensitivity is increased by more than 31.7 times than that of a bare fiber grating.