基于电磁式FBG光纤光栅电流传感器的研究

Electromagnetic FBG Current Sensor Research Based on FBG

本文重点研究了FBG光纤光栅的反射中心波长变化量与2变化的关系。当电流强度从0mA增至1100mA，每10mA记录下法布里滤波器解调后的布拉格波长变化的数据，经过重复三次实验获得数据，经过MATLAB图像分析，当电流趋于500mA以上时，与2呈现较好的线性关系。同时也分析电磁气隙对电流传感器的影响及电流回程测试缺陷。

This paper focuses on the FBG fiber grating reflection wavelength variation and change. When the current inten-sity increased from 0mA to 1100mA, every 10mA record the shift of the Prague wavelength demodulation method, filter the data, after repeated three times the experimental data obtained, through MATLAB image analysis, when the current tends to be more than 500mA, and showed good linear relationship. At the same time, analysis of electromagnetic air gap effect on current sensor and current return test defects.