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. 11, 2017
Filed:
Aug. 27, 2014
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventor:
Shinsuke Tanaka, Hiratsuka, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/10 (2006.01); G02B 6/12 (2006.01); G02B 6/124 (2006.01); G02B 6/34 (2006.01); G02B 6/122 (2006.01); H01S 5/00 (2006.01); H01S 5/125 (2006.01); H01S 5/30 (2006.01); H04B 10/50 (2013.01); H04B 10/60 (2013.01); H01S 5/14 (2006.01);
U.S. Cl.
CPC ...
H01S 5/1014 (2013.01); G02B 6/124 (2013.01); G02B 6/12004 (2013.01); G02B 6/1228 (2013.01); H01S 5/0078 (2013.01); H01S 5/1028 (2013.01); H01S 5/125 (2013.01); H01S 5/3031 (2013.01); H04B 10/501 (2013.01); H04B 10/60 (2013.01); G02B 2006/12038 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12104 (2013.01); G02B 2006/12109 (2013.01); G02B 2006/12147 (2013.01); H01S 5/1032 (2013.01); H01S 5/141 (2013.01); H01S 5/142 (2013.01);
Abstract
An optical device includes a silicon waveguide core having a tapered portion having a sectional size that decreases toward a terminal end portion thereof, a dielectric waveguide core contiguous to the silicon waveguide core while covering at least the tapered portion, the dielectric waveguide core having a refractive index lower than that of the silicon waveguide core and configuring a single-mode waveguide, and a diffraction grating provided at the single-mode waveguide and configuring a distributed Bragg reflection mirror.