Affiliation:
1. College of Engineering, Huzhou University, Huzhou, Zhejiang 313000, China
Abstract
Abstract
We study a (2+1)-dimensional coupled nonlinear Schrödinger equation in 𝒫𝒯-symmetric inhomogeneous nonlinear dimers with different values of diffractions and derive a two-Kuznetsov–Ma soliton solution with 𝒫𝒯-symmetry and 𝒫𝒯-antisymmetry based on the Darboux and similarity transformation methods. In a diffraction decreasing system with exponential profile, we investigate the management of controllable two-Kuznetsov–Ma soliton by modulating the relation between the values of the maximal effective propagation distance Z
m
and periodic peak locations Z
ij
. If Z
m
<Z
ij
, Z
m
=Z
ij
and Z
m
>Z
ij
, we discuss the initial excitation, peak excitation, and complete excitation of the structure with the i
th part and j
th peak for two-Kuznetsov–Ma soliton.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics