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:
Apr. 07, 2009
Filed:
Dec. 11, 2007
Applicants:
Shigeo Kittaka, Tokyo, JP;
Keiji Tsunetomo, Tokyo, JP;
Inventors:
Shigeo Kittaka, Tokyo, JP;
Keiji Tsunetomo, Tokyo, JP;
Assignee:
Nippon Sheet Glass Company, Limited, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01); G02B 6/26 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical waveguide deviceis configured to include a straight waveguideand bottleneck portionsprovided in two locations in the longitudinal direction of the waveguide. In the optical waveguide device, light confinement is implemented in all surfaces. This permits provision of an optical waveguide device, wherein a reflector or resonator can be provided in a waveguide using a simple configuration.