한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제30권3A호
  • /
  • Pages.160-167
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  • 2005
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

고정이득 L-band EDFA에서 발진 파장 및 방향에 따른 과도응답 특성

The Characteristics of Transient Response vs. Lasing Wavelengths and Directions in Gain-Clamped L-band EDFA

  • 김익상 (배재대학교 정보통신공학과) ;
  • 김창봉 (공주대학교 정보통신공학과) ;
  • 양흥 (배재대학교 정보통신공학과) ;
  • 손영호 (영남대학교 컴퓨터공학과)
  • 발행 : 2005.03.01
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⟨ 이전 논문 다음 논문 ⟩

초록

WDM(Wavelength Division Multiplexing) 광통신망의 노드에서 신호채널들이 분기 결합될 때 잔류채널들의 이득을 일정하게 제어해 주기 위해 고정이득 EDFA를 사용한다. 본 논문에서는 양방향 펌프에 의해 고이득을 가지는 L-band EDFA에서 발진광에 의해 입력변화를 보상해주는 방식으로 고정이득 EDFA를 구현하였다. 여기서 발진방향 및 파장에 따른 잔류채널의 과도응답 특성에 있어서 단파장 후방발진의 경우가 최적임을 확인할 수 있었다.

The gain-clamped EDFA has been developed to eliminate the output power change of WDM surviving channels to occur with added or dropped channels, which degrades the performance of WDM optical network. It maintains the constant gain of surviving channels when WDM channels are added or dropped in a network amplifying node. In this paper, the hi-directionally pumped gain-clamped EDFA is implemented to compensate the change of the input power by a lasing. The results show that the lasing of a short wavelength and backward propagation is the optimal condition to minimize the transient response of surviving channels in terms of the overshoot and gain saturation due to the inhomogeneous broadening effect.

키워드

참고문헌

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