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광시간영역 반사계를 이용한 분포형 광섬유 과열 감지 센서

Fiber-Optic Distributed Overheating Detection Sensor Using an Optical Time Domain Refrectometry

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초록

We proposed and demonstrated a distributed fiber-optic overheating detection sensor using optical time domain refrectometry. With increased of temperature the optical fiber is bended by a bi-metal and it result in optical leaky loss of the fiber occurs. The sensor structure is designed in such a way that the signal of overheating is happen when the temperature exceeding a threshold temperature and the optical fiber is protected from excess bending.

Abstract

We proposed and demonstrated a distributed fiber-optic overheating detection sensor using optical time domain refrectometry. With increased of temperature the optical fiber is bended by a bi-metal and it result in optical leaky loss of the fiber occurs. The sensor structure is designed in such a way that the signal of overheating is happen when the temperature exceeding a threshold temperature and the optical fiber is protected from excess bending.

참고문헌 (6)

  1. G. Bolognini1, "Analysis of distributed temperature sensing based on Raman scattering using OTDR coding and discrete Raman amplification", Meas. Sci. Technol, 18, pp.3211~3218 (2007)
  2. K. W. Lee, "Study on distance fire monitoring system using fiber optic cable", Korea Concrete Institute 2012 Fall Convention, pp.427~428 (2012)
  3. 김광택, "열확장 코어 광섬유의 구부림 손실을 이용한 광섬유형 온도 센서", 한국광학회지, 21(1), pp.12~15 (2010), 한국광학회
  4. W. A. Gambling, "Curvature and microbending losses in single mode optical fibers", Opt. Quantum Electron, 11, pp.43~59 (1979)
  5. H. W. Kwon, "Bending effects of thermally-expanded-core fiber and its application as variable optical attenuator", Jpn. J. Appl. Phys, 50, pp.022501-1~022501-4 (2011)
  6. 김광택, "In-line Variable Optical Attenuator Based on the Bending of the Tapered Single Mode Fiber", Journal of the Optical Society of Korea, 13(3), pp.349~353 (2009), 한국광학회

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