Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Fabrication of an Optical Fiber Amplifier Using Long-period Fiber Gratings Formed by Periodically Arrayed Metal Wire

금속선의 주기적 배열로 유도된 장주기 격자를 이용한 이득 평탄화된 광섬유 증폭기 제작

  • Sohn, Kyung-Rak (Division of Computer, Control and Electronic Communications Engineering, Korea Maritime University) ;
  • Hwang, Woong (Department of Electronic Communications Engineering, Korea Maritime University) ;
  • Shim, June-Hwan (Division of Computer, Control and Electronic Communications Engineering, Korea Maritime University)
  • 손경락 (한국해양대학교 컴퓨터.제어.전자통신공학부) ;
  • 황웅 (한국해양대학교 전자통신공학) ;
  • 심준환 (한국해양대학교 컴퓨터.제어.전자통신공학부)
  • Published : 2007.12.31
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Abstract

In this study, we have fabricated a gain flattened erbium-doped optical fiber amplifier. Gain flattening filters were realized by the strain-induced long period fiber gratings, which are made of periodically arrayed metal wires. Using the filter of $550{\mu}m$ period, spontaneous emission amplified at C-band wavelength by a 980nm pumping laser was flattened within 1dB of gain ripple. The performance of the simultaneous multi channel amplification was measured using a fabry-perot laser diode. Amplification ratio was above 20dB. This amplifier can be applied to the long distance transmission system based on a wavelength division multiplexing for boosting an attenuated signal.

본 연구에서는 이득 평탄화된 어븀첨가 광섬유 증폭기를 제작하였다. 이득 평탄화 필터는 주기적으로 배열된 금속선을 이용하여 유도되는 장주기 광섬유 격자로 구현하였다. 980 nm 펌핑 레이저에 의해 증폭된 자발방출 출력 스펙트럼의 C-밴드 파장 영역에서 이득 리플을 제작된 필터를 적용하여 1 dB 이내로 억제하였다. 다중 채널을 동시에 증폭시킬 수 있는 성능은 페브리 페롯 레이저 다이오드를 이용하여 측정하였고 C-밴드에서 20 dB 이상 증폭시킬 수 있음을 보여주었다. 이 증폭기는 파장분할 다중화 방식의 장거리 광 전송에서 다중 채널을 동시에 증폭하는 효과적인 방법을 제공할 것이다.

Keywords

References

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