Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays
Publication date
2006-12
Document type
Research article
Author
Organisational unit
Technische Universität Clausthal
Scopus ID
Pubmed ID
arXiv ID
Series or journal
Physical review. E, Statistical, nonlinear, and soft matter physics
Periodical volume
74
Periodical issue
6
Part of the university bibliography
Nein
Abstract
We report on the formation of dark discrete solitons in a nonlinear periodic system consisting of evanescently coupled channel waveguides in defocusing lithium niobate. Localized nonlinear dark modes displaying a phase jump in the center that is located either on-channel (mode A) or in-between channels (mode B) are formed, which is to our knowledge the first experimental observation of mode B. By numerical simulations we find that the saturable nature of the nonlinearity is responsible for the improved stability of mode B. The ability of the induced refractive index structures to guide light of a low-power probe beam is demonstrated.
Version
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