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Observation of diffraction-managed discrete solitons in curved waveguide arrays

: Szameit, A.; Garanovich, I.L.; Heinrich, M.; Minovich, A.; Dreisow, F.; Sukhorukov, A.A.; Pertsch, T.; Neshev, D.N.; Nolte, S.; Krolikowski, W.; Tünnermann, A.; Mitchell, A.; Kivshar, Y.S.


Physical Review. A 78 (2008), No.3, Art. 031801, 4 pp.
ISSN: 0556-2791
ISSN: 1050-2947
ISSN: 1094-1622
Journal Article
Fraunhofer IOF ()
optical bloch oscillation; dynamic localization; fused silica; particle; field

We observe the formation of discrete diffraction-managed optical solitons in arrays of periodically curved coupled waveguides for two types of modulated structures: laser-written arrays in silica glass with self-focusing nonlinearity and lithium niobate waveguide arrays with self-defocusing photorefractive nonlinearity. Our results demonstrate that, for both types of nonlinear response, soliton formation occurs after transitional self-induced beam broadening, being fundamentally different from nonlinear self-focusing and defocusing in a bulk medium or discrete self-trapping in straight waveguides.