Analysis of Doubly Periodic Dielectric Structures Formed by Spherical Black Holes

The problem of electromagnetic plane wave scattering by doubly periodic dielectric structures composed of spherical radially inhomogeneous absorbing elements of black hole type is considered. An algorithm accounting for the features of the black holes is developed on the basis of the hybrid projection method for solution of the problem. A number of numerical results characterizing both the effectiveness of the algorithms themselves and the properties of the black-hole-based absorbing structures are presented and discussed.