Multipole solitons in saturable nonlinear lattices

被引：14

作者：

Zeng, Liangwei ^{[1
]}

Shi, Jincheng ^{[2
]}

Belic, Milivoj R. ^{[3
]}

Mihalache, Dumitru ^{[4
]}

Chen, Junbo ^{[5
]}

Long, Hu ^{[1
]}

Lu, Xiaowei ^{[1
]}

Cai, Yi ^{[1
]}

Li, Jingzhen ^{[1
]}

机构：

[1] Shenzhen Univ, Coll Phys & Optoelect Engn, Minist Educ & Guangdong Prov,Key Lab Optoelect De, Shenzhen Key Lab Micronano Photon Informat Techno, Shenzhen 518060, Peoples R China

[2] CETC, Res Inst 54, Shijiazhuang 050011, Hebei, Peoples R China

[3] Texas A&M Univ Qatar, Doha 23874, Qatar

[4] Horia Hulubei Natl Inst Phys & Nucl Engn, Bucharest 077125, Romania

[5] Jiaying Univ, Sch Phys & Elect Engn, Meizhou 514015, Peoples R China

来源：

NONLINEAR DYNAMICS | 2023年 / 111卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Multipole solitons; Saturable nonlinearity; Nonlinear lattices; Self-adaptive propagations; FRACTIONAL SCHRODINGER-EQUATION; OPTICAL SOLITONS; PROPAGATION; PHYSICS; MEDIA; HYDRODYNAMICS; DYNAMICS;

D O I：

10.1007/s11071-022-07988-1

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

We demonstrate that both fundamental and multipole soliton families can be generated and stabilized in purely saturable nonlinear lattices, which can be readily realized in nonlinear optics or Bose-Einstein condensates. The waveforms and soliton power of these soliton families, produced in the nonlinear Schrodinger equation, are highly affected by the propagation constant and the strength of nonlinearity. In particular, the amplitude of solitons increases with the increase of the propagation constant, while it decreases with the increase of the strength of nonlinearity. We investigate in detail the stability of such solitons. Beside the perturbed propagation, the stable propagation with modulated parameters that can change during propagation, is also considered, e.g., the one with the modulation of the period of the nonlinear lattice and the other one with the modulation of the strength of saturation. It is verified that the rules of variation for all soliton families are consistent with the ones for modulated parameters.

引用

页码：3665 / 3678

页数：14