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. 27, 2018
Filed:
Jan. 28, 2014
Applicants:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Nec Corporation, Minato-ku, Tokyo, JP;
Inventors:
Assignees:
FUJITSU LIMITED, Kawasaki, JP;
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/122 (2006.01); G02B 6/12 (2006.01); G02B 6/125 (2006.01);
U.S. Cl.
CPC ...
G02B 6/1228 (2013.01); G02B 6/12002 (2013.01); G02B 6/12004 (2013.01); G02B 6/125 (2013.01);
Abstract
An optical waveguide includes a substrate, a first core provided over the substrate and having a first taper region that extends from one side toward the other side and has a sectional area that decreases toward the other side, and a plurality of second cores provided over the substrate and over or under the first core with a first cladding layer sandwiched therebetween and extending in parallel to the substrate and the first core.