The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Sep. 13, 2007
Viktor A. Podolskiy, Corvallis, OR (US);
Alexander A. Govyadinov, Corvallis, OR (US);
Viktor A. Podolskiy, Corvallis, OR (US);
Alexander A. Govyadinov, Corvallis, OR (US);
The State of Oregon Acting By and through the State Board at Higher Education, Corvallis, OR (US);
Abstract
The present invention provides an apparatus for propagating electromagnetic radiation of a selected vacuum wavelength beyond the diffraction limit. The apparatus comprises a waveguide core and a cladding disposed about the core. The waveguide core may include a material with an anisotropic dielectric permittivity, with the optical axis of the material primarily aligned with direction of light propagation. In addition, the waveguide core may have a cross-sectional dimension smaller than about ½ of the selected wavelength at least at one portion of the waveguide core. The cross-sectional dimension of the waveguide core may decrease along the length of the waveguide core creating a taper to provide a photonic funnel. The waveguide core may comprise a homogeneous anisotropic material, anisotropic metamaterial, or a photonic crystal.