Converging and wave guiding of Gaussian beam by two-layer dielectric rods

TitleConverging and wave guiding of Gaussian beam by two-layer dielectric rods
Publication TypeJournal Article
Year of Publication2008
AuthorsDai W, Soukoulis CM
Journal TitleApplied Physics Letters
Volume93
Pages201101
Date Published11/01
Type of ArticleArticle
ISBN Number0003-6951
Accession NumberISI:000261141400001
Keywordslaser beams, light, optical waveguide theory, PHOTONIC CRYSTAL, SUBWAVELENGTH APERTURE, surface, surface states
Abstract

We have shown that a two-layer dielectric structure can give excellent beaming and enhanced transmission simultaneously of a Gaussian source. The front surface of the layer of dielectric rods supports surface states and the rear grading layer couples the surface states to radiation modes. By repeating periodically this two-layer structure, one can obtain excellent beaming and enhanced transmission for very long distances.

DOI10.1063/1.3025818
Alternate JournalAppl. Phys. Lett.