Enhancing current sensor sensitivity using faraday effect with multiple reflections in magneto-optical crystals

Abstract

This paper develops and studies a sensor element mock-up based on the Faraday effect with multiple reflections. The authors show that as the length of the optical path in a magneto-optical crystal increases, it prompts the increase in the current sensor sensitivity. The paper also establishes the correspondence of the current waveform and the optical response of the sensor mock-up. It is shown that in developed sensor, the output signal magnitude directly correlates with the magnetic field induction.