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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Analysis on Nonlinear Distortion due to Modulation Instability and Proposal of Link Structure for Compensation in Optical Amplified Transmission Systems

광증폭 전송시스템에서 Modulation Instability에 의한 비선형 왜곡의 분석 및 광링크 보상구조의 제안

  • 이용원 (고려대학교 전자컴퓨터공학과 광통신망연구실) ;
  • 김용범 (KT 서비스개발연구소) ;
  • 이명문 (수원과학대학 정보통신과) ;
  • 유진태 (고려대학교 전자컴퓨터공학과 광통신망연구실) ;
  • 박진우 (고려대학교 전자컴퓨터공학과 광통신망연구실)
  • Published : 2003.05.01
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Abstract

We theoretically analyze the properties of nonlinear distortion due to modulation instability (MI), which is a major factor of performance degradation in optical amplified transmission systems, and propose an optical link structure to compensate MI based on the analysis. The proposed MI compensating link structure is composed of optical phase conjugators (OPCs) and dispersion compensating fibers (DCFs) in order to suppress nonlinear effects in optical transmission links. It has been confirmed through computer simulations that the performance of the proposed compensation scheme is superior to that of conventional compensation schemes for 500 km transmission.

본 논문에서는 광증폭 전송시스템에서 중요한 성능제한 요소인 modulation instability (MI)에 의한 비선형 왜곡을 보상하기 위해서 그 특성을 이론적으로 분석하고, 이를 토대로 MI를 보상하는 광 링크 구조를 제안한다. MI 보상 광링크 구조는 optical phase conjugators (OPCs)와 dispersion compensating fibers (DCFs)를 이용하여 MI 의한 분산을 보상하도록 설계하였다. 제안된 보상구조는 시뮬레이션 실험에서 500 km 광전송의 경우에 기존의 구조에 비해 그 성능이 크게 향상됨을 확인할 수 있었다.

Keywords

References

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