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Abstract <p>The paper addresses the problem of increasing the soliton fiber-optic line throughput limited by nonlinear effects in optical fiber. An approximate analytical description of the pulse dynamics in a passive communication line medium is developed, and a combined quasi-analytical method for compensating for nonlinear distortions at the receiver is proposed based on this description. The proposed approach enables a transition from a phase modulation format to an amplitude‒phase modulation format for a soliton signal, leading to an increase in the throughput of the systems in question due to constellation compression.</p>

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Method for Compensating for Nonlinear Distortions in Long-Haul Soliton Fiber-Optic Communication Lines

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • G. A. Patrin,
  • I. S. Chekhovskoy,
  • O. S. Sidelnikov,
  • O. V. Shtyrina,
  • M. P. Fedoruk

摘要

Abstract

The paper addresses the problem of increasing the soliton fiber-optic line throughput limited by nonlinear effects in optical fiber. An approximate analytical description of the pulse dynamics in a passive communication line medium is developed, and a combined quasi-analytical method for compensating for nonlinear distortions at the receiver is proposed based on this description. The proposed approach enables a transition from a phase modulation format to an amplitude‒phase modulation format for a soliton signal, leading to an increase in the throughput of the systems in question due to constellation compression.