Skip to Main Content
This paper is concerned with the determination of field patterns, propagation constants, and losses for axially propagating modes guided by an enclosed circular cylindrical, radially inhomogeneous dielectric of the type discussed in Parts I and II. The homogeneous outer medium (γ ≥ /a) is assumed to have a large relative permittivity ε2, and the analysis includes the perfect conductor case ε2 → ∞. The transition to trapped waves as the binding effect increases is demonstrated. Propagation constants in the case with loss are determined using a perturbation technique.