基于琼斯矩阵的反射型光纤电流传感器误差分析

With the development of smart grid and new technology, optical fiber current transducer is the research direction of new current transducer because of its good anti-interference and safety. At present, the main problem is that the reliability and stability of long-term work need to be further improved. Consequently, the reflective all-fiber current transducer is selected as the research object, and its error source is analyzed in detail. The error calculation model is established based on the Jones matrix, and the influence of scale factor is compared and analyzed. The results show that the process errors such as linear birefringence, 1/4 wave plate, and 45° fusion error have a great influence on the scale factor. When comprehensive errors act together, the influence of scale factor (s) fluctuates within 0.5%. Based on error analysis, reference compensation schemes such as improving process accuracy, introducing twisted optical fiber and signal processing can better improve the measurement deviation.