Accession Number : ADD003293

Title :   Directional Radiation by Asymmetrical Dielectric Gratings.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Tamir,Theodor ; Peng,Song-Tsuen

Report Date : 28 Sep 1976

Pagination or Media Count : 7

Abstract : The patent relates to a technique whereby a dielectric grating disposed on a thin film that has a surface wave propagating thereon can concentrate the power from this wave into a beam that is either above or below the grating according to the profile of the grating. By this technique, surface waves traveling in different directions can be distinguished and the efficiency of optical beam couplers can be improved, among other applications.

Descriptors :   *Gratings(Spectra), *Patents, Dielectrics, Thin films, Directional, Surface waves, Optical equipment

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE