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本文实现了一种基于磁致伸缩棒在均匀磁场中的伸缩效应的光纤布喇格光栅电流传感器 .把光纤布喇格光栅牢固地沿纵向粘贴在一个置于多层漆包线绕成的螺线管中间的磁棒上 ,磁棒在螺线管中间部分的匀强磁场中随漆包线中电流的增加而沿纵向伸长 ,从而带动光栅在应变的作用下改变波长 .实验测得电流跟波长变化基本上成线性关系 ,波长的改变范围约 0 .9nm,其灵敏度约为 0 .0 0 1nm/ m A
In this paper, a fiber Bragg grating current sensor based on the telescopic effect of magnetostrictive rod in a uniform magnetic field is realized.The fiber Bragg grating is fixedly stuck in the longitudinal direction on a spirally wound solenoid The middle of the bar, the bar magnet in the middle part of the solenoid in the magnetic field along with the increase of current in the enameled wire along the longitudinal elongation, which led to the grating under the action of strain change the wavelength experimentally measured current and wavelength changes in the basic On the linear relationship, the wavelength range of about 0. 9nm, the sensitivity of about 0. 0 1nm / m A