Journal of the Korean Institute of Telematics and Electronics D (전자공학회논문지D)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Laser sensor wavelength interrogation using a long-period fiber grating

장주기 격자를 이용한 광섬유 레이저센서의 파장변화 측정

  • Song, Min-Ho (School of Electrical Engineering, Seoul National University) ;
  • Lee, Sang-Bae (Photonics Research Center, Korea Institute of Science and Technology) ;
  • Choi, Sang-Sam (Photonics Research Center, Korea Institute of Science and Technology) ;
  • Nam, Hui (School of Electrical Engineering, Seoul National University) ;
  • Lee, Byoung-Ho (School of Electrical Engineering, Seoul National University)
  • 송민호 (서울대학교 전기공학부) ;
  • 이상배 (한국과학기술연구원 광기술연구센터) ;
  • 최상삼 (한국과학기술연구원 광기술연구센터) ;
  • 남희 (서울대학교 전기공학부) ;
  • 이병호 (서울대학교 전기공학부)
  • Published : 1997.12.01
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Abstract

We present a fiber laser sensor that uses a fiber grating as a strain sensor head and an end-reflector of the laser cavity. A passive wavelength. The long-period grating band-rejection filter showed a wide usable filter wavelength range of about 25 nm, and the intensity of transmitted light increased by 16% for 1nm sensor wavelength shift in trhe measurement range.

Keywords