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:
Feb. 10, 2026
Filed:
Jun. 20, 2023
Furukawa Electric Co., Ltd., Tokyo, JP;
Masahiro Yoshida, Tokyo, JP;
Yosuke Terada, Tokyo, JP;
FURUKAWA ELECTRIC CO. , LTD., Tokyo, JP;
Abstract
An optical device includes: a coupler that includes a first port, a second port, a third port, a fourth port, and a multimode interference waveguide; a first waveguide that is optically connected to the first port, the first waveguide being configured to guide light that is input to the coupler via the first port; a second waveguide that is optically connected to the second port, the second waveguide being configured to guide light that is input to the coupler via the second port; a third waveguide that is optically connected to the third port, the third waveguide being configured to guide light that is output from the coupler via the third port; and a fourth waveguide that is optically connected to the fourth port and, the fourth waveguide being configured to guide light output from the coupler via the fourth port.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile