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oai:recercat.cat:2117/198972026-02-02T06:11:45Zcom_2072_1033col_2072_452950

Asymmetric solitons and domain walls supported by inhomogeneous defocusing nonlinearity Kartashov, Yaroslav V. Lobanov, Valery E. Malomed, Boris A. Torner Sabata, Lluís Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica Nonlinear optics Solitons Bright solitons Defocusing Homogeneous regions Limiting case Multipoles Parameter regions Transverse directions Òptica no lineal Solitons We show that an inhomogeneous defocusing nonlinearity that grows toward the periphery in the positive and negative transverse directions at different rates can support strongly asymmetric fundamental and multipole bright solitons, which are stable in wide parameter regions. In the limiting case, when nonlinearity is uniform in one direction, solitons transform into stable domain walls (fronts), with constant or oscillating intensity in the homogeneous region, attached to a tail rapidly decaying in the direction of growing nonlinearity. Peer Reviewed Postprint (published version) 2013-12-01 Article Kartashov, Y.V. [et al.]. Asymmetric solitons and domain walls supported by inhomogeneous defocusing nonlinearity. "Optics letters", 01 Desembre 2013, vol. 37, núm. 23, p. 5000-5002. 0146-9592 https://hdl.handle.net/2117/19897 10.1364/OL.37.005000 eng http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-37-23-5000 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Restricted access - publisher's policy Attribution-NonCommercial-NoDerivs 3.0 Spain 3 p. application/pdf