Generation of solitons and periodic wave trains in birefringent optical fibers

Houria Triki and Vladimir I. Kruglov

Chaos, Solitons & Fractals, 2024, vol. 186, issue C

Abstract: We investigate the existence and propagation properties of all possible types of envelope soliton pulses in a birefringent optical fiber wherein the light propagation is governed by two coupled nonlinear Schrödinger equations with coherent and incoherent nonlinear couplings. Especially, we study the existence of optical solitons under the influence of group-velocity dispersion and third-order nonlinearity, which have physical relevance in the context of elliptical core optical fiber. The results show that the waveguiding medium supports the existence of a wide variety of propagating envelope solitons, including dipole-bright, bright-dipole, bright-dark, dark-bright, W-shaped-dipole and dipole-W-shaped pulses which exhibit different characteristics. Interestingly, we find that the obtained soliton pulses are allowable in both the normal and anomalous dispersion regimes. A wide class of exact analytic periodic (elliptic) wave solutions are identified. This illustrates the potentially rich set of localized pulses and nonlinear periodic waves in birefringent optical fiber media.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:186:y:2024:i:c:s096007792400852x

DOI: 10.1016/j.chaos.2024.115300

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