Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
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MSSI System with Dispersion-Managed Link Designed with Geometric-Schemed Dispersion Map

기하학적 구조의 분산 맵으로 설계된 분산 제어 링크를 갖는 MSSI 시스템

  • Seong-Real Lee (Division of Navigational Information System, Mokpo National Maritime University)
  • 이성렬 (목포해양대학교 항해정보시스템학부)
  • Received : 2024.10.13
  • Accepted : 2024.10.25
  • Published : 2024.10.31
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Abstract

We systematically studied the chromatic dispersion and nonlinear distortion compensation characteristics of 24-channel × 40 Gb/s wavelength division multiplexed (WDM) signal in a mid-span spectral inversion (MSSI) system with dispersion-managed link. WDM signals are transmitted over dispersion-managed link consisting of an 80 km × 48 fiber span including erbium-doped fiber amplifier (EDFA). The dispersion map applied to this dispersion-managed link has trapezoidal shape with various structures. The trapezoid-shaped dispersion map examined in this paper are designed with configuration in which the cumulative dispersion profile has positive or negative value in each section before and after the optical phase conjugator. Through simulation, it was confirmed that the proposed trapezoid-shaped dispersion map is effective in compensating for distorted WDM channel signals when the dispersion map is configured with the small RDPS (residual dispersion per span).

분산 제어 링크를 갖는 MSSI (mid-span spectral inversion) 시스템에서의 24채널 × 40 Gb/s 파장분할 다중 (WDM; wavelength division multiplexed) 신호의 색 분산과 비선형 왜곡 보상 특성을 체계적으로 연구하였다. WDM 신호는 EDFA (erbium-doped fiber amplifier)를 포함한 80 km × 48 광섬유 스팬으로 구성된 분산 제어 링크를 통해 전송된다. 이 분산 제어 링크에 적용된 분산 맵은 다양한 구조의 사다리꼴 형태를 갖는다. 본 논문에서 살펴보는 사다리꼴 형태의 분산 맵은 광 위상 공액기 앞과 뒤 구간 각각에서 누적 분산 프로파일이 양이나 음의 한 값을 갖는 구조로 설계되었다. 시뮬레이션을 통해 제안된 사다리꼴 모양의 분산 맵의 적용에 있어 적은 RDPS (residual dispersion per span)으로 분산 맵을 구성하는 경우에 왜곡된 WDM 채널 신호의 보상에 효과적이라는 확인하였다.

Keywords

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