Regular perturbation on the group-velocity dispersion parameter for nonlinear fibre-optical communications
Journal article, 2020

Communication using the optical fibre channel can be challenging due to nonlinear effects that arise in the optical propagation. These effects represent physical processes that originate from light propagation in optical fibres. To obtain fundamental understandings of these processes, mathematical models are typically used. These models are based on approximations of the nonlinear Schrödinger equation, the differential equation that governs the propagation in an optical fibre. All available models in the literature are restricted to certain regimes of operation. Here, we present an approximate model for the nonlinear optical fibre channel in the weak-dispersion regime, in a noiseless scenario. The approximation is obtained by applying regular perturbation theory on the group-velocity dispersion parameter of the nonlinear Schrödinger equation. The proposed model is compared with three other models using the normalized square deviation metric and shown to be significantly more accurate for links with high nonlinearities and weak dispersion.


Vinicius Oliari

Eindhoven University of Technology

Erik Agrell

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Alex Alvarado

Eindhoven University of Technology

Nature Communications

2041-1723 (ISSN)

Vol. 11 1 933

Signal shaping in optical communications—Beyond the Gaussian channel

Swedish Research Council (VR) (2017-03702), 2018-01-01 -- 2021-12-31.

Subject Categories

Communication Systems





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