Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Development of Fiber Optic BOTDA Sensor for Intrusion Detection

침입탐지를 위한 광섬유 BOTDA 센서의 개발

  • Kwon, Il-Bum (Korea Research Institute of Standards and Science, Division of Industrial Metrology) ;
  • Kim, Chi-Yeop (Korea Research Institute of Standards and Science, Division of Industrial Metrology) ;
  • Choi, Man-Yong (Korea Research Institute of Standards and Science, Division of Industrial Metrology) ;
  • Yu, Jae-Wang (Korea Research Institute of Standards and Science, Division of Industrial Metrology)
  • 권일범 (한국표준과학연구원 산업측정표준부) ;
  • 김치엽 (한국표준과학연구원 산업측정표준부) ;
  • 최만용 (한국표준과학연구원 산업측정표준부) ;
  • 유재왕 (한국표준과학연구원 산업측정표준부)
  • Published : 2001.05.31
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Abstract

Fiber optic BOTDA (Brillouin Optical Time Domain Analysis) sensor was developed to be able to detect intrusion effect through several ten kilometer optical fiber. Fiber optic BOTDA sensor was constructed with 1 laser diode and 2 electro-optic modulators. The intrusion detection experiment was peformed by the strain inducing set-up installed on an optical table to simulating an intrusion effect. In the result of this experiment, the intrusion effect was well detected as the distance resolution of 3 m through the fiber length of about 4.81 km during 1.5 seconds.

넓은 지역에 걸친 침입자의 침투를 감시하기 위하여 수십 km의 광섬유 길이 전체를 감지부로 사용할 수 있는 광섬유 BOTDA (Brillouin Optical Time Domain Analysis) 센서를 개발하였다. 광섬유 BOTDA 센서는 한 개의 레이저 다이오드와 두 개의 광전 변조기(electro-optic modulator)를 사용하여 간단하게 구성하였다. 침입자에 의한 광섬유의 변형률 변화를 탐지하는 실험을 수행하기 위하여 광학테이블 위에 광섬유에 변형률을 인가하기 위한 실험장치를 설치하여 실험을 수행하였다. 이 실험으로부터 시간간격 1.5 초동안 광섬유 약 4.81 km의 길이를 거리분해능 3 m로 침입자를 탐지할 수 있음을 확인하였다.

Keywords

References

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