Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Fiber-optic interferometric temperature sensor using a hollow fiber

중공 광섬유를 이용한 광섬유 간섭계형 온도센서

  • Park, Jae-Hee (Department of Electronic Engineering, Keimyung University) ;
  • Kim, Kwang-Taek (Department of Electronic Engineering, Honam University)
  • Published : 2007.05.31
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Abstract

A fiber-optic interferometric temperature sensor is fabricated using a hollow optical fiber with 8 um air hole. This interferometric sensor for measuring temperature consists of 13 mm long hollow optical fiber whose one end is attached to the single mode fiber and the other end is cleaved. After the sensor is put in a furnace, the phase change of the sensor output signal is measured as the temperature of the furnace increases from $28^{\circ}C$ to $100^{\circ}C$. The phase change of the fiber sensor is proportional to the change of temperature and the relationship between the change of phase and temperature is approximately linear. The sensitivity of this sensor is $2.7{\;}radians/^{\circ}C$.

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References

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