Interaction between a dark stripe and a two-dimensional photonic lattice with fully incoherent white light

Two-dimensional nonlinear photonic lattices are created with fully incoherent white light emitted from an incandescent lamp in the self-defocusing photovoltaic media. We study experimentally the interaction of a dark stripe with such a nonlinear photonic lattice and observe a novel type of composite state. The composite state is generated by coupling of localized stripe and the periodic pixels nearest neighboring to the stripe.