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Fiber-Optic Inteferometric Voltage Sensor using a Hollow Fiber

중공 광섬유를 이용한 광섬유 간섭계형 전압센서

  • 배정환 (계명대학교 전자공학과) ;
  • 박재희 (계명대학교 전자공학과) ;
  • 김경찬 (계명대학교 물리학과) ;
  • 김광택 (호남대학교 전자공학과) ;
  • 한원택 (광주과학기술원 정보기전공학과)
  • Published : 2008.02.29

Abstract

A fiber-optic interferometric voltage sensor with high sensitivity is investigated. The fiber-optic voltage sensor is composed of an In-Line Michaelson interferometer bonded on a PZT. The In-Line Michaelson interferometer is a hollow optical fiber spliced to a single-mode fiber at one end and cleaved at the other end. The phase shift of the sensor output signal was induced by the applied AC voltage. The relation between the amplitude of the applied voltage and the phase shift of the sensor output signal was approximately linear and the sensitivity was $0.065{\pi}$ radian/V.

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