Frequency-selective self-trapping and supercontinuum generation in arrays of coupled nonlinear waveguides

We study spatiotemporal dynamics of soliton-induced twooctave-broad supercontinuum generated by fs pulses in an array of coupled nonlinear waveguides. We show that after fission of the input pulse into several fundamental solitons, red and blue-shifted nonsolitonic radiation, as well as solitons with lower intensity, spread away in transverse direction, while the most intense spikes self-trap into spatiotemporal discrete solitons. (C) 2007 Optical Society of America.