Transformation of heterogeneous surface waves by skewed streams

Scattered electromagnetic fields which occur because of interaction between the surface waves of a planar dielectric waveguide with a periodic structure consisting of a skewed reflecting lattice were investigated. It is shown that the radiation portion of the spectrum of the scattered field propagates from the plane containing the direction of propagation of the heterogeneous planar dielectric waveguide wave. It is found that a critical angle exists at which the scattered field represents a heterogeneous electromagnetic wave propagating along the surface of the periodic structure. It is demonstrated that it is possible to control the propagation direction for volume and surface diffraction waves in the structure in question.