分析了光纤Bragg光栅(FBG)的传感机理,讨论了FBG的温度、应变增敏原理。从光纤光栅材料的选择、写入方法综述了温度、应变的增敏技术,并进一步分析了压力温度传感器的增敏封装技术和聚合物封装光纤光栅传感器的封装增敏技术。
The sensing principle of fiber Bragg grating(FBG) is analyzed. The sensitivity enhancing principle of temperature strain of FBG is discussed. In two aspects of fiber grating materials and writing methods, the basic techniques of enhancing the fiber gratings sensitivity of temperature strain are generalized. The techniques of sensitivity-enhancing and packing of temperature and pressure sensors are deeply analyzed, and polymer overlay packing is researched.