Based on the theoretical analysis of the principle of the FBG current measurement,the magnetostrictive effect of GMM,and the interrogation technology of twin-core fiber filter are introduced.

• 在介绍超磁致伸缩材料的磁致伸缩效应、光纤光栅检测电流原理以及双芯光纤滤波器解调原理的基础上,借助超磁致伸缩材料和光纤光栅等构建了电流测量单元。