光纖電流傳感器是以法拉第磁光效應為基礎、以光纖為介質的新興電力計量裝置,它通
過測量光波在通過磁光材料時其偏振面由于電流產生的磁場的作用而發生旋轉的角度來確定被測電流的大小。傳感頭是光纖電流傳感器最為重要和關鍵的部件。分析了全光纖型和混合型光纖電流傳感器傳感頭的結構和工作原理,對改進光纖電流傳感器的設計,提高光纖電流傳感器的性能具有重要的指導作用。
關鍵詞:光纖電流傳感器;法拉第磁光效應;傳感頭
　　Abstract :Optical current transducer is a new power measurement equipment ,which is based on Faraday magneto - optic effect and uses optical fiber as medium. It measures the rotation angle of optical wave polarization plane caused by magnetic field produced by current when the optical wave goes through magneto - optic material to calculate the current .
The sensing head is the most critical component . Analyzes roundly the structure and operational principle of all - fiber and mixed optical current transducer. It plays an instructional role in improving the design of optical current transducer and promoting the performance of optical current transducer.
Key Words :Optical Current Transducer ;Faraday Magneto - optic Effect ;Sensing Head