다중모드 광섬유의 스펙클 패턴을 이용한 광섬유 파장센서

A Fiber Wavelength Sensor using Speckle Patterns of a Multimode Fiber

  • 이일민 (서울대학교 전기공학부 국가지정 홀로그래피 기술 연구실) ;
  • 양병춘 (서울대학교 전기공학부 국가지정 홀로그래피 기술 연구실) ;
  • 이병호 (서울대학교 전기공학부 국가지정 홀로그래피 기술 연구실)
  • Lee, Il-Min (NRL of Holotech. School of Electrical Eng. Seoul National University) ;
  • Yang, Byung-Choon (NRL of Holotech. School of Electrical Eng. Seoul National University) ;
  • Lee, Byoung-Ho (NRL of Holotech. School of Electrical Eng. Seoul National University)
  • 발행 : 1999.11.20

초록

In this paper, we report a new scheme of multimode fiber sensor which uses pattern matching method. Fiber speckle pattern allows the wide dynamic range of the intensity based sensor. The proposed method uses pre-built specklegram database which is made by image processing techniques of wavelet transform and edge detection for the sake of compact data storage and fast sensing time. We demonstrate our proposed sensor and the experimental results will do presented.

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