Optical dispersion curves of two metal-clad lightguides having double convex lens core cross sections

Abstract

Using Goell's point-matching method under the weak guidance condition, modal characteristic equations have been derived for two lightguides with double convex lens-shaped core cross sections. In one case, both of the boundaries are taken as conducting, and in the other case, we consider only one side as conducting. In both cases, dispersion curves are obtained and compared.