Stability of nonparaxial gap-soliton bullets in waveguide gratings

被引：4

作者：

Otsobo, J. A. Ambassa ^{[1
,2
]}

Megne, L. Tiam ^{[1
,2
]}

Tabi, C. B. ^{[3
]}

Kofane, T. C. ^{[1
,2
,3
]}

机构：

[1] Univ Yaounde I, Fac Sci, Dept Phys, Lab Mech, POB 812, Yaounde, Cameroon

[2] Univ Yaounde I, Ctr Excellence Africain Technol Informat & Commun, Yaounde, Cameroon

[3] Botswana Int Univ Sci & Technol, Dept Phys & Astron, P-Bag 16, Palapye, Botswana

来源：

CHAOS SOLITONS & FRACTALS | 2022年 / 158卷

基金：

美国国家科学基金会;

关键词：

Gap-soliton bullets; Nonparaxial approximation; 2D nonlinear Schr?dinger equation; Higher-order dispersions; SELF-INDUCED TRANSPARENCY; 3-DIMENSIONAL SPINNING SOLITONS; DISPERSIVE DIELECTRIC FIBERS; NONLINEAR HELMHOLTZ-EQUATION; GINZBURG-LANDAU EQUATION; SPATIOTEMPORAL SOLITONS; OPTICAL PULSES; PROPAGATION; MEDIA; BEAM;

D O I：

10.1016/j.chaos.2022.112034

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We investigate the formation and propagation of gap-soliton bullets in nonlinear periodic waveguides at fre-quencies close to the gap for Bragg reflection beyond the paraxial approximation. Using a multiple-scales analy-sis, we derive a two-dimensional (2D) nonlinear Schrodinger equation with higher-order correction terms that consider the nonparaxial regimes in the slowly-varying envelope approximation. In addition, a fully numerical simulation of the newly derived model equation demonstrates that the mutual balancing between Kerr, dimen-sionality, higher-order dispersions and nonparaxiality allows shape-preserving propagation of gap-soliton bul -lets in a grating waveguide. (c) 2022 Published by Elsevier Ltd.

引用

页数：9

共 30 条

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