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Localized modes in nonlinear binary kagome ribbons
University of Belgrade, Serbia.
University of Belgrade, Serbia.
University of Belgrade, Serbia.
University of Belgrade, Serbia.
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2015 (English)In: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 92, no 5, 052916- p.Article in journal (Refereed) PublishedText
Abstract [en]

The localized mode propagation in binary nonlinear kagome ribbons is investigated with the premise to ensure controlled light propagation through photonic lattice media. Particularity of the linear system characterized by the dispersionless flat band in the spectrum is the opening of new minigaps due to the "binarism." Together with the presence of nonlinearity, this determines the guiding mode types and properties. Nonlinearity destabilizes the staggered rings found to be nondiffracting in the linear system, but can give rise to dynamically stable ringlike solutions of several types: unstaggered rings, low-power staggered rings, hour-glass-like solutions, and vortex rings with high power. The type of solutions, i.e., the energy and angular momentum circulation through the nonlinear lattice, can be controlled by suitable initial excitation of the ribbon. In addition, by controlling the system "binarism" various localized modes can be generated and guided through the system, owing to the opening of the minigaps in the spectrum. All these findings offer diverse technical possibilities, especially with respect to the high-speed optical communications and high-power lasers.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2015. Vol. 92, no 5, 052916- p.
National Category
Physical Sciences
URN: urn:nbn:se:liu:diva-123797DOI: 10.1103/PhysRevE.92.052916ISI: 000365871500028PubMedID: 26651771OAI: diva2:892928

Funding Agencies|Swedish Research Council within the Swedish Research Links programme [348-2013-6752]; Sweden-Chilean-Serbian trilateral project "Control of light and matter waves propagation and localization in photonic lattices"; Ministry of Education, Science and Technological Development of Republic of Serbia [III45010]; Fondecyt Grant [1151444]; Programa ICM [RC-130001]; Programa de Financiamiento Basal [FB0824]

Available from: 2016-01-11 Created: 2016-01-11 Last updated: 2016-02-18

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Johansson, Magnus
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