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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.:

US 7177490 B1

PDFFull Text
Date of Patent:
Feb. 13, 2007

Filed:

Jan. 30, 2006

Optical waveguide, optical device, and method of manufacturing optical waveguide

Applicants:

Masaki Sugiyama, Kawasaki, JP;

Tadao Nakazawa, Kawasaki, JP;

Inventors:

Masaki Sugiyama, Kawasaki, JP;

Tadao Nakazawa, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:

Staas & Halsey LLP

Primary Examiner:

Brian Healy

Assistant Examiner:

Charlie Peng

Int. Cl.
CPC ...
G02F 1/295 (2006.01); G02B 6/26 (2006.01); G02B 6/42 (2006.01); G02B 6/10 (2006.01); C03B 37/23 (2006.01); C03B 37/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical waveguide is formed on a substrate and includes a curved ridge structure, a curved optical path, and a buffer layer. The curved ridge structure is formed on the substrate so as to have a curvature in a longitudinal direction of the curved ridge structure. The curved optical path is formed along the curved ridge structure. The buffer layer covers a side of the ridge structure and has a lower refractive index than a refractive index of the substrate.

Find Patent Forward Citations

Sugiyama, Masaki. (2007). Optical waveguide, optical device, and method of manufacturing optical waveguide (U.S. Patent No. 7177490). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7177490

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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