Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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A multiplexed fiber-optic sensor for measuring large displacement

대변위 측정을 위한 다중화된 광섬유 센서

  • Yoo, Jung-Ae (Department of Physics, Hannam University) ;
  • Kwon, Il-Bum (Korea Research Institute of Standards and Science, Smart Measurement Group) ;
  • Jo, Jae-Heung (Department of Physics, Hannam University) ;
  • Seo, Dae-Cheol (Korea Research Institute of Standards and Science, Smart Measurement Group)
  • 유정애 (한남대학교 물리학과) ;
  • 권일범 (한국표준과학연구원 스마트계측그룹) ;
  • 조재흥 (한남대학교 물리학과) ;
  • 서대철 (한국표준과학연구원 스마트계측그룹)
  • Published : 2005.05.31
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Abstract

A multiplexed bend loss type single-mode fiber-optic sensor system was prepared to measure the displacement of several cm of the civil engineering structures such as many bridges, tunnels and various buildings. This bend loss type fiber-optic sensor used the signal difference between two reflection signals due to various bend losses generating at a pair of optical connectors by using OTDR (optical time domain reflectometer) for measuring displacements. And the experiments were conducted for showing the measurement feasibility on the range of 10 cm, and the multiplexing experiments were also performed to measure the displacements of 5 measuring positions of an object by setting these 5 fiber-optic sensors on a single mode fiber simultaneously.

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References

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