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:
Feb. 08, 2005
Filed:
Feb. 21, 2003
Frederik Marcel Van Der Vliet, Pasadena, CA (US);
Dazeng Feng, Arcadia, CA (US);
Frederik Marcel van der Vliet, Pasadena, CA (US);
Dazeng Feng, Arcadia, CA (US);
Kotura, Inc., Monterey Park, CA (US);
Abstract
An optical device includes a ridge waveguide defined by a ridge extending from a slab of a light transmitting medium. The optical device also includes trenches extending into the slab of light transmitting medium on opposing sides of the ridge. At least one of the trenches is associated with a trench displacement that tapers from a first displacement to a second displacement. The trench displacement is the distance between the ridge and the side of a trench closest to the ridge. The optical device also includes at least one electrical contact positioned in at least one of the trenches.