Szameit, A.A.SzameitGaranovich, I.L.I.L.GaranovichHeinrich, M.M.HeinrichMinovich, A.A.MinovichDreisow, F.F.DreisowSukhorukov, A.A.A.A.SukhorukovPertsch, T.T.PertschNeshev, D.N.D.N.NeshevNolte, S.S.NolteKrolikowski, W.W.KrolikowskiTünnermann, A.A.TünnermannMitchell, A.A.MitchellKivshar, Y.S.Y.S.Kivshar2022-03-042022-03-042008https://publica.fraunhofer.de/handle/publica/21653210.1103/PhysRevA.78.031801We 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.enoptical bloch oscillationdynamic localizationfused silicaparticlefield620530journal article