Azimuthally uniform surface-plasma modes in thin metallic cylindrical shells

The pure transverse-magnetic (TM)-polarized surface-plasma bound modes of a thin metallic right circular cylindrical shell imbedded in dielectric materials are studied. Two modes are generally found to be supported by the structure. They are analogous to the two modes of the corresponding planar structure of a thin metallic film bound by dielectrics. One of the modes is shown to have sufficiently small loss to make it of potential application in fiber optics. The transcendental equation of the modes generalizes that of the planar geometry by having the cylinder radius as a parameter. The equation is solved exactly in the complex domain for all cases considered