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. 08, 2021
Fujitsu Optical Components Limited, Kawasaki, JP;
Shuntaro Makino, Kawasaki, JP;
Yoshinobu Kubota, Yokohama, JP;
Yasuhiro Ohmori, Sapporo, JP;
Masaharu Doi, Sapporo, JP;
Shintaro Takeuchi, Sapporo, JP;
Fujitsu Optical Components Limited, Kawasaki, JP;
Abstract
An optical waveguide device has a substrate, an intermediate layer, a thin-film LN layer containing an X-cut lithium niobate, and a buffer layer stacked on the substrate, and an optical waveguide having a ridge shape formed in the thin-film LN layer. The optical waveguide device includes a plurality of electrodes provided, respectively, at a first side and a second side of the optical waveguide. The electrodes are disposed so that respective bottom surfaces thereof are at positions lower than a position of a surface of the buffer layer.