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Straight hollow waveguide with three dielectric layers in the cross section

Abstract The main objective is to understand the influence of the three dielectric layers (and not only with one dielectric layer) and a metallic layer (Ag) in the cross section of the straight hollow waveguide on the output fields, output power density and output power transmission. The simplest and most efficient multilayer structure is a three dielectric layers that deposited on a metal layer. The contribution of the proposed technique to calculate the refractive indices and the transverse derivative of the dielectric profile for three dielectric layers is important to reduce the transmission losses of the dielectric-coated metal waveguides. This contribution is very important to improve the method that based on the mode model. This mode model can be a useful tool to predict the relevant parameters in the case of the hollow waveguide with three dielectric layers and a metallic layer (Ag) for practical applications (output fields, output power density and output power transmission), before carrying out experiments in the laboratory.