optical fiber grating sensor

In consideration of the difficulty of monitoring internal deformation in dam model tests, a new optical fiber sensor based on fiber Bragg grating (FBG) technology has been developed.

考虑到大坝模型试验中内部变形难以监测的现状，研制了一种新型的基于光纤布拉格光栅(FBG)技术的光纤传感器。

The present paper introduce mainly basic principle, device characteristic and making method of long-period fiber grating and outlines the application status in optical communication and sensor system.

介绍长周期光纤光栅基本工作原理、器件特性和制备方法，同时对这种器件在光通信和传感系统中的应用状况作了简要概述。

The key problem of FBG sensor study is the optical fiber diffraction grating signal demodulation, namely, the detection of small shifting of wave length.

研究光纤光栅传感器的关键问题是光纤光栅的信号解调，即波长微小移位的检测问题。