ALL-DIELECTRIC COAXIAL WAVEGUIDE

摘要

An all-dielectric coaxial waveguide (100) comprising a dielectric core regio n (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 oute r region (108) have an average index of refraction which is higher than the index of refraction of the annulus (106).