Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Fabrication and Characteristics of Plastic Optical Fiber Directional Couplers

  • Kim Dae-Geun (Institute of Physics and Applied Physics, Yonsei University) ;
  • Woo Sae Yoon (Institute of Physics and Applied Physics, Yonsei University) ;
  • Kim Dong-Kwan (Institute of Physics and Applied Physics, Yonsei University) ;
  • Park Seung-Han (Institute of Physics and Applied Physics, Yonsei University) ;
  • Hwang Jin-Taek (e-Polymers Co.,)
  • Received : 2005.09.06
  • Published : 2005.09.01
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Abstract

Directional couplers of gradient-index plastic optical fibers were fabricated and characterized. In particular, we have employed a core-facet technique to make the directional couplers, which require mechanical side polishing and linkage. We have measured insertion loss, excess loss, and coupling ratio of the fabricated couplers as a function of polishing depth and coupling length. We found that polishing depth of $\~300{\mu}m$ and coupling length of $\~35mm$ are optimum conditions for minimizing the insertion and excess losses and for achieving 1: 1 coupling ratio.

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References

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