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:
Jul. 04, 2023
Filed:
Feb. 02, 2021
Applicant:
Fujitsu Optical Components Limited, Kawasaki, JP;
Inventors:
Shuntaro Makino, Kawasaki, JP;
Yoshinobu Kubota, Yokohama, JP;
Yasuhiro Ohmori, Sapporo, JP;
Masaharu Doi, Sapporo, JP;
Teruo Kurahashi, Isehara, JP;
Shintaro Takeuchi, Sapporo, JP;
Assignee:
Fujitsu Optical Components Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); G02F 1/03 (2006.01); G02F 1/035 (2006.01);
U.S. Cl.
CPC ...
G02F 1/225 (2013.01); G02F 1/035 (2013.01); G02F 1/0316 (2013.01); G02F 2201/07 (2013.01); G02F 2201/12 (2013.01); G02F 2202/20 (2013.01);
Abstract
An optical waveguide device includes a substrate on which an intermediate layer, a thin-film LN layer of lithium niobate, and a buffer layer are stacked; an optical waveguide formed in the thin-film LN layer; and a plurality of electrodes near the optical waveguide. The intermediate layer and the buffer layer contain a same material of a metal element of any one of group 3 of group 18 of a periodic table of elements.