Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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A Study of the Reflection Type Optical Fiber Sensor Based on Speckle Detection

스펙클 패턴을 이용한 반사형 광섬유 센서에 대한 연구

  • Jung, Eun-Ju (Dept. of Electronic Engineering, Keimyung University) ;
  • Park, Jae-Hee (Dept. of Electronic Engineering, Keimyung University)
  • 정은주 (계명대학교 전자공학과) ;
  • 박재희 (계명대학교 전자공학과)
  • Published : 2004.03.31
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Abstract

A reflection type optical fiber line sensor based on the speckle detection has been developed using the optical fiber mirror with the reflectance of 72 %. Some experiments were carried on with the automobile and the 500 m length multimod fiber. When the automobile passed on the fiber sensor, two abrupt changes of the output waveform occured like the transmission type sensor based on the speckle variations. The signal to noise ratio of this sensor was about 40 dB.

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References

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