ALL-DIELECTRIC COAXIAL WAVEGUIDE

摘要

An all-dielectric coaxial waveguide (100) comprising a dielectric core region (101); an annulus (106) of dielectric material, surrounding the core region (101), in which electromagnetic radiation is confined; and an outer region (108) of cylindrically coaxial dielectric shells of alternating indices of refraction surrounding the annulus (106). The core region (101) and the outer region (108) have an average index of refraction which is higher than the index of refraction of the annulus (106).