We investigate the propagation of short, intense laser pulses in arrays of coupled silica waveguides, in the anomalous dispersion regime. The nonlinearity induces trapping of the pulse in a single waveguide, over a wide range of input parameters. A sharp transition is observed for single waveguide excitation, from strong diffraction at low powers to strong localization at high powers.
Bibliographical noteFunding Information:
This research was supported by the U.S.-Israel Binational Science Foundation and by NSERC in Canada. We are indebted to the staff of the mechanical workshop of Glasgow University. Valuable discussions with G. Fibich and B. Malomed are acknowledged.