In array of nonlinear waveguides, a giant compression of the input beam can be achieved by exciting a rogue
wave. Input field almost homogeneously distributed over hundreds of waveguides concentrates practically all the
energy into a single waveguide at the output plane of the structure. We determine the required input profile of
the electric field to achieve maximal energy concentration at output. We illustrate the phenomenon modeling
the array by direct numerical simulations of the discrete nonlinear Schrodinger equation.
The paper deals with the theoretical investigation of nonlinear surface polariton excitation in the metal film,
contacting with the nonlinear medium in one side and the linear medium in other side. We consider that the
nonlinear surface polariton excitation occurs due to the light falling on the metal film from linear medium with
the incident angle greater that the total internal reflection angle. The phenomena of photon blockade and optical
bistability are predicted.
The paper deals with the theoretical investigation of plane, normally incident electromagnetic wave transmission through the flat metal folm whose dielectric constant has small periodical sinusoidal modulation in one dimension parallel to the projection of the electric field onto the film surface. The dependencies of the film transmittancy on the parameters of the problem (frequency, modulation depth and absorption) are examined. It is shown that the film transmittancy increases considerably when the conditions for resonance interaction of an incident electromagnetic wave with surface plasmon polaritons (SPPs) are met. It is found that for small but finite absorption there are two frequencies in the vicinity of which the transmittancy can achieve the values of the order of unity due to resonances on symmetric and antisymmetric (relative to the mean plane) SPP modes. It is shown that for each value of absorption there exists a certain optimal modulation depth, which maximizes the
resonance transparency.
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