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. 23, 2024
Filed:
Apr. 21, 2022
Fujitsu Optical Components Limited, Kawasaki, JP;
Shuntaro Makino, Kawasaki, JP;
Yoshinobu Kubota, Yokohama, JP;
Yasuhiro Ohmori, Sapporo, JP;
Masaharu Doi, Sapporo, JP;
Masaki Sugiyama, Kawasaki, JP;
Shintaro Takeuchi, Sapporo, JP;
Yoshihiko Yoshida, Sapporo, JP;
Shinji Maruyama, Sapporo, JP;
Teruo Kurahashi, Isehara, JP;
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Abstract
An optical device includes a thin film Lithium Niobate (LN) layer, a first optical waveguide, and a second optical waveguide. The thin film LN layer is an X-cut or a Y-cut LN layer. The first optical waveguide is an optical waveguide that is formed on the thin film LN layer along a direction that is substantially perpendicular to a Z direction of a crystal axis of the thin film LN layer. The second optical waveguide is an optical waveguide that is routed and connected to the first optical waveguide. At least a part of a core of the first optical waveguide is made thicker than a core of the second optical waveguide.