Then we investigate the temperature and strain responses of FBGs in PMFs.
接着，研究了三种保偏光纤光栅温度和应变传感性质。
In recent years, fiber Bragg gratings (FBGs) have shown an enormous potential for sensing applications in smart structures and composite materials.
近年来，光纤光栅在用于建筑和桥梁领域的传感应用方面显示出很大的潜力。
The principle and structure design of temperature compensation package for FBGs are expatiated, temperature characteristic of packaged FBGs is measured.
阐述了温度补偿封装技术的基本原理和结构设计方法，并对封装后的光栅作了温度性能测试。
According to the bending beam theory, the distribution of both horizontal and vertical displacements can be calculated from the strains measured by the FBGs.
根据弯梁原理，由光纤布拉格光栅测得的应变结果可反算出大坝沿水平向和竖向的位移分布。
The interrogation technique was based on the use of two (or more) wavelength-matched fiber Bragg gratings (FBGs) to receive the reflected signal from the sensing FBG.
该技术利用两个（或多个）与传感光栅匹配的布喇格光纤光栅作为解调元件。
By means of phase mask technology, 1 FBGs with reflectivity of 20% and 99% were written into standard communication fibers and special germanium doped fibers, respectively.
利用相位掩膜技术：1在一般标准通信光纤和锗掺杂特种光纤上分别写入反射率分别为20%和99%的FBG。
By means of phase mask technology, 1 FBGs with reflectivity of 20% and 99% were written into standard communication fibers and special germanium doped fibers, respectively.
利用相位掩膜技术：1在一般标准通信光纤和锗掺杂特种光纤上分别写入反射率分别为20%和99%的FBG。
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