Increase of nonlinear signal distortions due to linear mode coupling in space division multiplexed systems

Ruslan V. Kutluyarov, Valeriy Kh Bagmanov, Vyacheslav V. Antonov, Albert Kh Sultanov, Vladimir S. Lyubopytov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

This paper is focused on the analysis of linear and nonlinear mode coupling in space division multiplexed (SDM) optical communications over step-index fiber in few-mode regime. Linear mode coupling is caused by the fiber imperfections, while the nonlinear coupling is caused by the Kerr-nonlinearities. Therefore, we use the system of generalized coupled nonlinear Schrödinger equations (GCNLSE) to describe the signal propagation. We analytically show that the presence of linear mode coupling may cause increasing of the nonlinear signal distortions. For the detailed study we solve GCNLSE numerically for the standard step index fiber at the wavelength of 850 nm in the basis of spatial modes with helical phase front (vortex modes) and for a special kind of few-mode fiber with enlarged core, providing propagation of five spatial modes at 1550 nm. Simulation results confirm that the linear mode coupling may lead to a significant increase of the nonlinear distortions. It is necessary to take this phenomenon into account in SDM systems with linear compensation of mode coupling, because the nonlinear distortions may sufficiently decrease the effectiveness of the compensation.

Original languageEnglish
Title of host publicationProceedings - 2017 International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages282-286
Number of pages5
ISBN (Electronic)9781538615966
DOIs
Publication statusPublished - 14 Nov 2017
Externally publishedYes
Event2017 International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2017 - Novosibirsk, Russian Federation
Duration: 18 Sep 201722 Sep 2017

Publication series

NameProceedings - 2017 International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2017

Conference

Conference2017 International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2017
Country/TerritoryRussian Federation
CityNovosibirsk
Period18/09/1722/09/17

Keywords

  • Cortex modes
  • Few-mode fibers
  • Kerr-nonlinearities
  • Space division multiplexing

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