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:
May. 19, 2009
Filed:
May. 02, 2007
Sharee J. Mcnab, Christchurch, NZ;
Yurii A. Vlasov, Katonah, NY (US);
Sharee J. McNab, Christchurch, NZ;
Yurii A. Vlasov, Katonah, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention is a method and an apparatus for resonant coupling in photonic crystal circuits. In one embodiment, a photonic crystal device comprises a substrate having a plurality of apertures formed therethrough, a photonic crystal circuit (e.g., formed by 'removing' a series of apertures), and a strip waveguide extending through the apertures and coupled to the photonic crystal circuit via a surface localized photonic state formed at a surface of the photonic crystal (e.g., in the apertures). The surface localized photonic state facilitates the efficient resonant tunneling of photons from the wavelength-independent strip waveguide to the wavelength-selective photonic crystal circuit, thereby improving the filtering capabilities of the photonic crystal device.