提出并验证了一种光纤光栅电流传感装置，该装置利用洛氏线圈把大电流转换为低电压，借助压电陶瓷的电致伸缩效应把低电压转换为光纤光栅布拉格波长的漂移，最后通过干涉解调技术把波长漂移信号转化为相移信号，由相移值确定待测电流的变化量。实验证明在0-400A的范围内，电流传感灵敏度为0．0473rad／A，与理论值0．0589rad／A基本吻合。

A fiber Bragg grating current sensing configuration is introduced and experimented. High-current is conversed to low-voltage by Rogowski coil. Based on magnetostrictive effect of piezoelectric ceramic low-voltage is conversed into fiber Bragg grating wavelength shifts, which are conversed into phase shifts. Measuring the phase shifts of the signal can demodulate the current. At the range from zero to 400 A, the sensing sensitivity of this scheme was demonstrated to be 0.0473 tad/A, experimentally. It basically matches the prospected value of 0.0589 rad/A.