Polychromatic interface solitons in nonlinear photonic lattices

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We demonstrate that interfaces between two nonlinear periodic photonic lattices offer unique possibilities for controlling nonlinear interaction between different spectral components of polychromatic light, and a change in the light spectrum can have a dramatic effect on the propagation along the interface. We predict the existence of polychromatic surface solitons which differ fundamentally from their counterparts in infinite lattices.
3 pages, 5 figures

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