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levels, the PNP increases, resulting in a strong localization of the soliton, mainly in . rate the dimensions presenting the electric field as. c.c.. (5) where is the 0.3 inside the array, experiences anomalous dispersion, and it broadens significantly due to self defocusing. In this latter case, the adjacent waveguides have the.
14 May 2008 13, 53 (1988); Yuri S. Kivshar, Self-localization in arrays of defocusing waveguides, Opt. Lett. 18, 1147. (1993).  Jason W. Fleischer, Mordechai Segev, Nikolaos K. Efremidis, and Demetrios N. Christodoulides, Observa- tion of two-dimensional discrete solitons in optically in- duced nonlinear photonic
We address light propagation in segmented waveguide arrays where the refractive index is longitudinally guides modifies the strength of their coupling, resulting in the dynamic localization of light. This effect was should occupy certain domains of the guiding structure over strictly required length and then should be
We predict a sharp crossover from nonlinear self-defocusing to discrete self-trapping of a narrow Gaussian beam with the increase of the refractive index contrast in a We demonstrate experimentally nonlinear discrete localization of light with defocusing nonlinearity by single site excitation in LiNbO3 waveguide arrays.
S. Kivshar, “Self-localization in arrays of defocusing wave-guides,” Opt. Lett. 18, 1147–1149 (1993). 3. J. Feng, “Alternative scheme for studying gap solitons in an infinite periodic Kerr medium,” Opt. Lett. 18, 1302– 1304 (1993). 4. R. F. Nabiev, P. Yeh, and D. Botez, “Spatial gap solitons in periodic nonlinear structures,” Opt.
This novel class of solutions is obtained under quite generic conditions, while the method is applicable to a large variety of systems, including more complex geometries consisting of linear/nonlinear, self-focusing/defocusing and homogeneous/periodic parts, while other types of nonlinearity can also be examined.
18 Dec 2017 medium acts to increase the beam divergence rather than negate it. In 1993, the existence of self-localisation of light in. arrays of defocusing waveguides was theoretically predicted6, with the nonlinearity of the waveguide array 'switching'. the photorefractive medium from self-defocusing to self-focusing.
Observation of higher-order solitons in defocusing waveguide arrays. Eugene Smirnov, Christian E. Ruter, and Detlef Kip. Institute of Physics and Physical a crystal length corresponds to. , and the maximal nonlinear contribution to the refractive index due to photovoltaic effect yields . For the sake of generality, we also
self-trapping in diffraction-managed waveguide arrays. Ivan L. Garanovich, Andrey A. Sukhorukov, and Yuri S. Kivshar. Nonlinear Physics Centre and Centre for Ultra-high S. Longhi, M. Marangoni, M. Lobino, R. Ramponi, and P. Laporta, “Observation of Dynamic Localization in . Waveguide array length is 150 mm. 3.
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