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:
Jul. 01, 2014
Filed:
Oct. 16, 2008
Duncan Stewart, Menlo Park, CA (US);
Marco Florentino, Mountain View, CA (US);
Nathaniel Quitoriano, Pacifica, CA (US);
Charles Santori, Palo Alto, CA (US);
Duncan Stewart, Menlo Park, CA (US);
Marco Florentino, Mountain View, CA (US);
Nathaniel Quitoriano, Pacifica, CA (US);
Charles Santori, Palo Alto, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A ridge waveguide with decreased optical losses from surface scattering includes a ridge waveguide with etched surfaces and an optical layer deposited on the ridge waveguide that substantially covers the etched surfaces. A method of reducing optical energy losses from scattering at etched surfaces of a ridge waveguide includes depositing a layer of optical material over the etched surfaces, the layer of optical material filling surface irregularities in the etched surfaces.