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:
May. 24, 2011
Filed:
Oct. 24, 2007
Applicant:
Akiko Gomyo, Tokyo, JP;
Inventor:
Akiko Gomyo, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02B 6/42 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an optical waveguide element that includes first and second optical waveguides () which are formed to have different waveguide modes of guided lights, whose polarized waves are different. First optical waveguide () includes directional coupling region () and, second optical waveguide () includes incident side waveguide (), which has directional coupling region () and which is provided in parallel with first optical waveguide (), and second optical waveguide () includes exit side waveguide (), which is extended from incident side waveguide () and which is bent in the direction that recedes from first optical waveguide ().