Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Current Sensor for Bus Bar based on Fiber Bragg Gratings

광섬유 브래그 격자를 이용한 부스바용 전류 센서

  • Kwang Taek Kim (Department of Electronic Engineering, Honam University) ;
  • Gunpyo Kim (Department of Electronic Engineering, Honam University)
  • Received : 2023.02.24
  • Accepted : 2023.03.16
  • Published : 2023.04.25
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Abstract

In this paper, a fiber-optic current sensor for a bus bar conductor based on the fiber Bragg grating (FBG) is proposed and demonstrated experimentally. The metal bus bar and a magnet are connected to each other through an FBG and the Bragg wavelength of the FBG is changed by magnetic force between the two connected devices. The experimental results showed that the Bragg wavelength of an FBG shifted by 650 pm as the 500 A direct current was applied to the bus bar.

본 논문에서는 500 A용 bus bar에 적용할 수 있는 광섬유 브래그 격자를 이용한 전류 센서를 제안하여 실험으로 구현하였다. Bus bar와 영구자석을 광섬유 격자로 연결하여 전류 인가 시, 연결된 두 소자 사이에서 발생하는 자기력에 의해 광섬유 브래그 격자의 브래그 파장이 변하게 된다. 실험 결과 500 A 직류 전류를 인가 시 브래그 파장은 650 pm의 변화를 보였다.

Keywords

Acknowledgement

한국산업단진공단 단년도 이전기술 사업화 R&D (IRGJ2113).

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