Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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Dispersion-Managed Link with Different Numbers of Fiber Spans and Asymmetric Distribution of RDPS

중계 구간의 개수가 다르고 RDPS가 비대칭인 분산 제어 링크

  • Hong, Sung-Hwa (Division of Navigational Information System, Mokpo National Maritime University) ;
  • Lee, Seong-Real (Division of Navigational Information System, Mokpo National Maritime University)
  • 홍성화 (목포해양대학교 항해정보시스템학부) ;
  • 이성렬 (목포해양대학교 항해정보시스템학부)
  • Received : 2019.11.28
  • Accepted : 2019.12.21
  • Published : 2019.12.30
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Abstract

The configuration of dispersion-managed optical link with optical phase conjugator, which is placed at the non-midway of total transmission length, is proposed for implementing of the flexible optical network. The optical phase conjugator is located between the former half transmission section and the latter half transmission section, which are consisted of 6 fiber spans and 14 fiber spans respectively, and the averaged RDPS of each half transmission section are inconsistence. And, the artificial distribution of each fiber span's RDPS, which are gradually increased/decreased as the span numbers are increased, is adopted to compensate for the distorted wavelength division multiplexed channels. From the simulation results, it is confirmed that the compensation in dispersion-managed link configured by a special distribution pattern among 16 proposed patterns, in which the RDPS of each fiber spans are gradually decreased/increased in the former/latter half section with the small deviation, is suitable to compensate for the distorted wavelength division multiplexed channels.

광 네트워크의 융통적 구성을 위해 전체 전송로 중간이 아닌 위치에 존재하는 광 위상 공액기를 갖는 분산 제어 링크를 제안하였다. 제안하는 분산 제어 링크에서 광 위상 공액기는 6개 중계 구간으로 구성되는 전반 전송 구획과 14개로 구성되는 후반 전송 구획 사이에 존재하고, 각 전송 반 구획에서의 평균 중계 구간 당 잉여 분산 (RDPS; residual dispersion per span)이 서로 다른 비대칭 구조이다. 또한 파장 분할 다중 채널의 왜곡 보상을 위하여 각 중계 구간마다 실제 RDPS를 점진적으로 증가/감소시키는 인위적 분포 구조를 채택하였다. 시뮬레이션 결과 제안된 16개의 비대칭 분포 제어 링크 구조 중 인접한 중계 구간 간 RDPS 편차를 적게 하여 전반 전송 구획에서는 중계 구간의 실제 RDPS를 점진적으로 감소시키고 후반 전송 구획에서는 중계 구간의 실제 RDPS를 점진적으로 증가시키는 구조가 왜곡된 파장 분할 다중 채널의 보상에 적합한 것을 확인하였다.

Keywords

References

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