Resonant surface polaritons of cylindrical three-layer waveguide in far IR-range

We report the results of the theoretical investigations of the existence of peculiarities of the surface electromagnetic waves (SEW) in a cylindrical three-layer waveguide on the metal-dielectric boundary in far IR range where the electrodynamical characteristics of the metal are described only in the approximation of normal skin effect. We consider the problem of the field structure of SEW, its parameters of attenuation from both sides of the medium boundary, its propagation length along the cylindrical surface. The Leontovich boundary conditions were used. The problem solved has significant value for near-field optics (NFO) in the far IR range where the principles of NFO are only being established.