摘要
This paper aims to investigate the multi-soliton solutions of the coupled Lakshmanan–Porsezian–Daniel equations with variable coefficients under nonzero boundary conditions.These equations are utilized to model the phenomenon of nonlinear waves propagating simultaneously in non-uniform optical fibers.By analyzing the Lax pair and the Riemann–Hilbert problem,we aim to provide a comprehensive understanding of the dynamics and interactions of solitons of this system.Furthermore,we study the impacts of group velocity dispersion or the fourth-order dispersion on soliton behaviors.Through appropriate parameter selections,we observe various nonlinear phenomena,including the disappearance of solitons after interaction and their transformation into breather-like solitons,as well as the propagation of breathers with variable periodicity and interactions between solitons with variable periodicities.
作者
赵会超
马雷诺
解西阳
Hui-Chao Zhao;Lei-Nuo Ma;Xi-Yang Xie(Department of Mathematics and Physics,and Hebei Key Laboratory of Physics and Energy Technology,North China Electric Power University,Baoding 071003,China)
基金
supported by the Natural Science Foundation of Hebei Province,China (Grant No.A2021502004)
the Fundamental Research Funds for the Central Universities (Grant No.2024MS126).