한국항행학회논문지 (Journal of Advanced Navigation Technology)

  • 제23권3호
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  • Pages.251-257
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  • 2019
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  • 1226-9026(pISSN)
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  • 2288-842X(eISSN)
한국항행학회 (The Korean Navigation Institute)
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80 km × 56 spans의 초장거리 전송 링크에서 왜곡된 WDM 채널의 보상

Compensation of the Distorted WDM Channels in Ultra-long Transmission Link of 80 km × 56 Spans

  • 이성렬 (목포해양대학교 항해정보시스템학부)
  • Lee, Seong-Real (Division of Navigational Information System, Mokpo National Maritime University)
  • 투고 : 2019.05.14
  • 심사 : 2019.06.25
  • 발행 : 2019.06.30
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초록

분산 제어와 광 위상 공액이 결합된 초장거리 광전송 링크의 구조를 제안하였다. 전체 전송 링크는 80 km (단일 모드 광섬유 span) ${\times}$ 56 fiber span으로 구성된다. 왜곡된 파장 분할 다중 채널을 보상하기 위하여 각 fiber span의 단일 모드 광섬유 길이와 중계 구간 당 잉여 분산을 점진적으로 증가/감소시키는 인위적 분포 구조를 채택하였다. 다른 선행 연구에서 제안된 인위적 분포는 fiber span이 많아질수록 보상 효과가 줄어들 수 있기 때문에 인위적 분포 패턴을 9개의 fiber span 마다 반복시키는 구조를 분산 제어와 광 위상 공액 링크에 적용하였다. 시뮬레이션 결과 제안된 4개의 분포 패턴 중 특정한 인위적 분포 패턴이 적용된 링크를 사용하면 기존에 제안되었던 반복이 없는 인위적 분포에 비해 왜곡된 WDM 채널의 보상 효과가 다소 크게 나타나는 것을 확인하였다.

The configuration of ultra-long optical transmission link with dispersion management and optical phase conjugation is proposed. The whole transmission link consist of 80 km (single mode fiber span) ${\times}$ 56 fiber spans. The artificial distribution of single mode fibers' lengths and residual dispersions in fiber spans, which are gradually increased/decreased as the span number is increased, is adopted to compensate for the distorted wavelength division multiplexed channels. Since the compensation effect through the artificial distribution in the previous researches is expected to decrease as the number of fiber spans are increased, three-time repetition of the artificial distribution patterns at intervals of 9 fiber spans applied into the link with dispersion management and optical phase conjugation is proposed. From the simulation results, it is confirmed that the compensation in the link configured by the special distribution pattern among 4 proposed patterns is slightly improved than the link configured by the conventional method, which is designed by the repeat-less distribution pattern.

키워드

참고문헌

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