Power controlled soliton stability and steering in lattices with saturable nonlinearity
Publication date
2004-07
Document type
Research article
Author
Organisational unit
Technische Universität Clausthal
Scopus ID
Pubmed ID
Publisher
APS
Series or journal
Physical review letters
ISSN
Periodical volume
93
Periodical issue
3
Part of the university bibliography
Nein
Language
English
Abstract
Dynamical properties of discrete solitons in nonlinear Schrödinger lattices with saturable nonlinearity are studied in the framework of the one-dimensional discrete Vinetskii-Kukhtarev model. Two stationary strongly localized modes, centered on site (A) and between two neighboring sites (B), are obtained. The associated Peierls-Nabarro potential is bounded and has multiple zeros indicating strong implications on the stability and dynamics of the localized modes. Besides a stable propagation of mode A, a stable propagation of mode B is also possible. The enhanced ability of the large power solitons to move across the lattice is pointed out and numerically verified.
Version
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