Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Side-Coupled Asymmetric Plastic Optical Fiber Coupler for Optical Sensor Systems

  • Kim, Kwang-Taek (Department of Optoelectronics, Honam University) ;
  • Kim, Deok-Gi (Department of Optoelectronics, Honam University) ;
  • Hyun, Woong-Keun (Department of Optoelectronics, Honam University) ;
  • Hong, Ki-Bum (Department of Optoelectronics, Honam University) ;
  • Im, Kie-Gon (Department of Physics, Chonnam National University) ;
  • Baik, Se-Jong (Department of Physics, Chonnam National University) ;
  • Kim, Dae-Kyong (Korea Electronics Technology Institute, Digital Convergence Center) ;
  • Choi, Hyun-Yong (Korea Electronics Technology Institute, Digital Convergence Center)
  • Received : 2008.09.25
  • Accepted : 2008.11.10
  • Published : 2008.12.25
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Abstract

This paper reports a side-coupled asymmetric $1{\times}2$ plastic optical fiber coupler for an optical sensor system. The dependence of the optical power coupling ratio on the coupling angle and refractive index of the adhesion layer in both the forward and backward directions was examined based on the geometrical optics. It was confirmed experimentally that the coupling ratios can be optimized by controlling the coupling angle and refractive index of the adhesion layer. A maximum forward coupling efficiency > 93% was achieved.

Keywords

References

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