地形变测量中光纤传感新方法  

A NEW METHOD OF USING OPTIC FIBER SENSOR IN GROUND DEFORMATION MEASUREMENT

作　　者：邓涛[1] 廖成旺[1,2] 丁炜[1,2] 王浩[1,2] 陈卫明[1,2] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]地壳运动与地球观测实验室,武汉430071

出　　处：《大地测量与地球动力学》2008年第6期132-136,共5页Journal of Geodesy and Geodynamics

基　　金：地震科学联合基金(A08081)

摘　　要：提出一种基于光纤干涉和光纤光栅组合传感思路,利用光纤光栅的Bragg波长绝对测量和光纤干涉方法高精度相对测量的特点,将光纤传感应用于高精度地形变测量中的新方法。该传感系统有抗干扰能力强、耐腐蚀、防潮湿、无零点漂移、无须标定等优点。A new method of applying optic fiber sensor to high accurate ground deformation measurement, which is based on the idea about the optic fiber interference combined with fiber grating and the utilization of the characteristics of Bragg wavelength absolute measurement and high accurate relative measurement with fiber interference,is proposed. This sensing system has many adventages, such as anti-interference, corrosion resistance, moisture proof, no zero drift and no need of calibration.

关 键 词：光纤干涉 光纤光栅 地形变观测 地震前兆台网 传感器 

分 类 号：TH761[机械工程—仪器科学与技术]