Phase twisted modes and current reversals in a lattice model of waveguide arrays with nonlinear coupling
2005 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1063-651X, Vol. 71, no 2, 025601-1--025601-4 p.Article in journal (Refereed) Published
We consider a lattice model for waveguide arrays embedded in nonlinear Kerr media. Inclusion of nonlinear coupling results in many phenomena involving complex, phase-twisted, stationary modes. The norm (Poynting power) current of stable plane-wave solutions can be controlled in magnitude and direction, and may be reversed without symmetry-breaking perturbations. Also stable localized phase-twisted modes with zero current exist, which for particular parameter values may be compact and expressed analytically. The model also describes coupled Bose-Einstein condensates.
Place, publisher, year, edition, pages
2005. Vol. 71, no 2, 025601-1--025601-4 p.
IdentifiersURN: urn:nbn:se:liu:diva-14239DOI: 10.1103/PhysRevE.71.025601OAI: oai:DiVA.org:liu-14239DiVA: diva2:22968