三角形双层光路光学电流互感器传感头的研究

OCT Sensor Head with Dual Layer Optic Circuit

分析了四角形双层光路光学电流互感器（ＯＣＴ）传感头的位相差补偿原理及其存在的问题，进而提出了一种结构更为简洁，性能更加优越的光学电流互感器传感头方案；详细地介绍了这种结构的设计原理、方法；进一步论证了光的色散对于这种传感头造成的位相差是非常小的，对测量影响可以忽略，因而该方案具有实用价值。

The principle of phase discrepancy compensation of the tetragonal OCT (Optic Current Transducer) sensor head with dual layer optic circuit is analysed as well as its existing proplem. A new kind of the OCT sensor head is designed, of which the structure is simpler and the performance is better. It is demonstrated that the phase discrepancy caused by optical dispersion of this new kind sensor head is very small and its influence on measurement can be ignored, showing practical significance.