铌酸锂晶体光纤电流传感器的设想

Consideration of Optic Fiber Electric Current Sensor Using LiNbO_3 Crystal

本文根据铌酸锂晶体的线性和逆压电效应的综合效果及法拉第电磁感应原理,提出了一种新型大电流光纤电流传感器设想,并从理论和实验证明了这一传感器的可行性。测量电流在50—300A的范围内,得到了线性度优于1.09％。此外,该传感器不仅可以测量工频电流,而且也可以测量脉冲电流。

This paper proposes a novel optical fiber heavy current sensor based on a synthetic effect of the linear electro-optic effect and antipiezoelectric effect of LiNbO3 crystal Faraday electromagnetic induction principle, and proves the feasibility of this sensor on theory and experiment. The linearity of this sensor is better than 1.09% in measurement range from 50A to 300A. In addition it can mepsure not only alternating current, but also pulse current.