Multi-Peak Solitons In Pt-Symmetric Bessel Optical Lattices With Defects
Keywords
defect solitons; lattice solitons; multi-peak solitons; PT-symmetry
Abstract
This paper presents a theoretical analysis of the existence and stability of multi-peak solitons in parity–time-symmetric Bessel optical lattices with defects in nonlinear media. The results demonstrate that there always exists a critical propagation constant μc for the existence of multi-peak solitons regardless of whether the nonlinearity is self-focusing or self-defocusing. In self-focusing media, multi-peak solitons exist when the propagation constant μ > μc. In the self-defocusing case, solitons exist only when μ < μc. Only low-power solitons can propagate stably when random noise perturbations are present. Positive defects help stabilize the propagation of multi-peak solitons when the nonlinearity is self-focusing. When the nonlinearity is self-defocusing, however, multi-peak solitons in negative defects have wider stable regions than those in positive defects.
Publication Date
10-1-2016
Publication Title
Frontiers of Physics
Volume
11
Issue
5
Document Type
Article
Personal Identifier
scopus
DOI Link
https://doi.org/10.1007/s11467-016-0569-2
Copyright Status
Unknown
Socpus ID
84964727357 (Scopus)
Source API URL
https://api.elsevier.com/content/abstract/scopus_id/84964727357
STARS Citation
Wang, Hongcheng, "Multi-Peak Solitons In Pt-Symmetric Bessel Optical Lattices With Defects" (2016). Scopus Export 2015-2019. 2402.
https://stars.library.ucf.edu/scopus2015/2402