Theoretical analysis of long-haul systems adopting mode-division multiplexing

Abdulaziz E. Elfiqi, Abdallah A.i. Ali, Ziad A. El-sahn, Kazutoshi Kato, Hossam M.h. Shalaby

    Research output: Contribution to journalArticlepeer-review


    In this paper, we modify the Gaussian noise model (GN-model) to address the nonlinearity effects in few-mode fibers. Closed-form expressions for the nonlinear interference power in birefringent few-mode fibers (FMFs) are derived and the effect of differential mode group delay (DMGD) is investigated. Moreover, the nonlinearity accumulation through propagation in multiple-spans fiber and the birefringence effect are considered. In addition, we discuss the effect of the DMGD on the fiber nonlinearity in systems adopting mode-division multiplexing (MDM). The results show that the DMGD management degrades the system performance in weak coupling regime because the nonlinear interference is enhanced. However, strong coupling-based transmission outperforms weak coupling transmission regardless of the DMGD effect in the weak coupling regime. On the other hand, by taking the DMGD effect into account, the system performance in weak coupling regime is better than that in strong coupling regime. Furthermore, the impact of the nonlinearity on the maximum reach is discussed.
    Original languageEnglish
    Pages (from-to)10-18
    Number of pages9
    JournalOptics Communications
    Early online date4 Apr 2019
    Publication statusPublished - 15 Aug 2019

    Bibliographical note

    © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International


    • Few-mode fibers (FMF)
    • Gaussian noise model (GN-model)
    • Mode-division multiplexing (MDM)
    • Nonlinearity modeling
    • Space-division multiplexing (SDM)


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