[19a-438-1~12] 3.8 Optical measurement, instrumentation, and sensor

△ [19a-438-7] Ultra-compact Optical Current Sensor using Ferromagnetic Material

〇Yutaka Chaen¹, Masao Takahashi¹ (1.Toshiba)

Keywords:Optical current sensor, Ferromagnetic material, Faraday effect

Optical current sensors are expected to be applied for many sensing fields, because of their high electric-magnetic noise immunity and compact size. However, it is not widespread due to its high price to achieve high accuracy. Since the progress of signal processing technology has made the accuracy easy to achieve, we focused on simplifying the configuration of the optical current sensor. We began developing the ultra-compact optical current sensor using ferromagnetic material. The sensor is realized with the minimum configuration including only the polarizers and Faraday element.