Setzpfandt, FrankNeshev, DragomirSchiek, RolandSolntsev, AlexanderRicken, RaimundMin, YoohongSohler, WolfgangPertsch, ThomasSukhorukov, AndreyKivshar, Yuri2015-12-10August 289780977565771http://hdl.handle.net/1885/57317We study experimentally and numerically the spatiotemporal evolution of short pulses in quadratic nonlinear waveguide arrays with coupled second-harmonic modes, revealing complex spectral transformations involving generation of new frequency components at the Brillouin zone edge.Keywords: Brillouin zone edge; Frequency components; Lithium Niobate Waveguide; Nonlinear waveguide arrays; Second-harmonic; Short pulse; Spatio-temporal dynamics; Spatiotemporal evolution; Spectral transformations; Optical fibers; Quantum electronics; Optics201110.1109/IQEC-CLEO.2011.61940572016-02-24