Bragg guiding of domainlike nonlinear modes and kink arrays in lower-index core structures
Bragg guiding of domainlike nonlinear modes and kink arrays in lower-index core structures
We introduce a novel class of stable nonlinear modes trapped in a lower-index film core sandwiched between two optical lattices, or in the cylindrical core of a radial lattice, imprinted in defocusing media. Such a family of nonlinear modes transforms into defect lattice solitons when the core width is sufficiently …