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提出了一种结构小巧（体积为3cm×4cm×1．5cm）、使用方便的光纤电流传感器．该系统的传感头是以Sagnac干涉仅原理为基础，利用法拉第光学材料作为传感元件，经过巧妙的结构设计构成．传感头不含有任何与们振有关的光学元件，并且待测的信号与光的偏振态和光强的起伏无关，使得该传感系统特别适用于电流遥测使用．初步实验结果和理论结果吻合．
A novel optical fiber current sensor with compact size (3cm × 4cm × 1.5cm) is proposed. The system’s sensing head is based on the principle of Sagnac interference only, the use of Faraday optical material as the sensing element, through clever structural design. Sensing head does not contain any vibration-related optical components, and the signal to be measured has nothing to do with the polarization and light intensity fluctuations of the light, making the sensing system particularly suitable for current telemetry use. The experimental results are in good agreement with the theoretical ones.