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:
Jan. 20, 2009
Filed:
Jun. 28, 2007
Punit P. Chiniwalla, Ann Arbor, MI (US);
Philip Hobbs, Briarcliff Manor, NY (US);
Theodore G. Van Kessel, Millbrook, NY (US);
Punit P. Chiniwalla, Ann Arbor, MI (US);
Philip Hobbs, Briarcliff Manor, NY (US);
Theodore G. van Kessel, Millbrook, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus for optical communication is provided. The apparatus includes a first waveguide formed on a first surface and a second waveguide formed on a second surface. The first and second surfaces are bonded together to form an air gap between the first and second surfaces and diffraction gratings of the first and second waveguides are facing each other. A third waveguide is formed on a third surface, and the third surface is bonded to the second surface so an air gap exists between the third and second surface and diffraction gratings of the third and second wave guides face each other. The light beam passes from the second wave guide across the air gap and into the third waveguide.