Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Input-output Coupler System with 45-degree Slant Angle Based on Bragg Hologram

  • Phan, Anh-Hoang (Dept. of Computer and Communication, Chungbuk National University) ;
  • Kim, Nam (Dept. of Computer and Communication, Chungbuk National University) ;
  • Park, Jae-Hyeung (Dept. of Computer and Communication, Chungbuk National University) ;
  • Lee, Kwon-Yeon (Dept. of Electronic Engineering, Sunchon National University)
  • Received : 2008.12.01
  • Accepted : 2009.01.09
  • Published : 2009.03.25
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Abstract

In this paper, we designed and fabricated an input-output coupler system using two or three volume gratings at 632.8nm wavelength. The additional third grating is added at the output coupler to enhance the overall efficiency. The experimental results show that the total system throughput reaches 63% with two-grating and 75% with three-grating input-output coupler. We also present a design method to obtain the desired output power ratio between the gratings.

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References

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