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:
Aug. 10, 2021
Filed:
Mar. 27, 2020
Tdk Corporation, Tokyo, JP;
Fujitsu Optical Components Limited, Kanagawa, JP;
Shinji Iwatsuka, Tokyo, JP;
Kenji Sasaki, Tokyo, JP;
Hiroki Hara, Tokyo, JP;
Yasuhiro Ohmori, Kanagawa, JP;
Masaharu Doi, Kanagawa, JP;
Shintaro Takeuchi, Kanagawa, JP;
Yoshihiko Yoshida, Kanagawa, JP;
Yoshinobu Kubota, Kanagawa, JP;
TDK CORPORATION, Tokyo, JP;
FUJITSU OPTICAL COMPONENTS LIMITED, Kanagawa, JP;
Abstract
An electro-optic device is provided with a substrate, an optical waveguide formed of a lithium niobate film with a ridge shape on the substrate, and an electrode that applies an electric field to the optical waveguide. The optical waveguide includes a first waveguide section provided at least in an electric field application region applied with the electric field and having a thickness of 1 μm or larger and a second waveguide section provided in a region other than the electric field application region and having a thickness of 0.3 μm or larger and less than 1 μm.