Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Double-Pass Two-Stage EDFA with Gain-Flattening Filters

  • Sohn, Ik-Bu (Department of Electronic Engineering, Kyungpook National University) ;
  • Baek, Jang-Gi (Department of Electronic Engineering, Kyungpook National University) ;
  • Song, Jae-Won (Department of Electronic Engineering, Kyungpook National University)
  • Received : 2003.03.24
  • Published : 2003.06.01
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Abstract

The optical gain and noise figure improved double-pass two-stage EDFA using a mirror, circulator, and gain-flattening filters is proposed. By double passing the pump light and removing the ASE propagating into the input part, the signal gain of 5 ㏈ and noise figure of 2.1 ㏈ are improved compared to the conventional single- and double-pass EDFA With gain-fattening filters in the second stage of EDFA, we obtain an improved flat gain with a gain flatness less than 1 ㏈ over 33-nm wavelength range at the 980-nm pump power of 86 ㎽.

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References

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