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:
Mar. 04, 2025
Filed:
Mar. 21, 2022
Applicant:
Fujitsu Optical Components Limited, Kawasaki, JP;
Inventors:
Yoshihiko Yoshida, Sapporo, JP;
Nobuaki Mitamura, Saitama, JP;
Shuntaro Makino, Kawasaki, JP;
Yoshinobu Kubota, Yokohama, JP;
Assignee:
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/03 (2006.01); G02F 1/035 (2006.01); H04B 10/50 (2013.01);
U.S. Cl.
CPC ...
G02F 1/035 (2013.01); G02F 1/0316 (2013.01); G02F 1/0327 (2013.01); G02F 2201/16 (2013.01); G02F 2202/105 (2013.01); H04B 10/501 (2013.01);
Abstract
An optical device includes a silicon substrate, a waveguide formed of a thin film that is laminated on the silicon substrate and that is made of a perovskite oxide with a large electro-optic effect as compared to lithium niobate, and a cladding layer that covers the waveguide. Further, the optical device includes ground electrode that has a ground potential and a signal electrode that is arranged at a position facing the ground electrode and that applies driving voltage to the waveguide.