Novel optical soliton structures for a defocusing Lakshmanan–Porsezian–Daniel optical system

Abstract

In this article, under investigation is a defocusing Lakshmanan–Porsezian–Daniel optical (DLPD) system holding higher-order dispersion and higher-order nonlinear effects. Via applying the Darboux transformation method, new analytical solutions are obtained for the system. Some novel intersection solitons and their characteristics are found out under the certain parameter setting. There are four basic soliton structures: (i) bright-dark soliton with reduced amplitude at the intersection point; (ii) bright-dark soliton with increased amplitude at the intersection point; (iii) doubly-bright soliton with bright peaks; (iv) doubly-dark soliton with dark troughs. Furthermore, as the order of the solutions increases, there are more abundant and more complex structures at the intersection point. This indicates that this system can carry out more optical information by exciting higher order solitons.