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Quasi-Distributed Water Detection Sensor Based On a V-Grooved Single-Mode Optical Fiber Covered with Water-Soluble Index-Matched Medium

  • Kim, Dae Hyun (Department of Electronic Engineering, Honam University) ;
  • Kim, Kwang Taek (Department of Electronic Engineering, Honam University)
  • Received : 2014.12.22
  • Accepted : 2015.01.08
  • Published : 2015.01.31

Abstract

The V-grooved single-mode fiber in which a surface part of the core was removed was investigated as a quasi-distributed water detection sensor. In the normal state, the V-grooved region is filled and covered with a specific RI (Refractive Index)-matched medium, and the sensor experiences minimal optical loss. As water invades the V-grooved region, the material is dissolved and removed, and a considerable optical loss occurs owing to the large RI difference between the fiber core and water. The experimental results showed the feasibility of the device as a sensor element of the quasi-distributed water detection sensor system based on general optical time domain reflectometry (OTDR).

Keywords

References

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