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:
May. 12, 2026
Filed:
Jun. 26, 2024
Fujitsu Optical Components Limited, Kawasaki, JP;
Akira Oka, Kawasaki, JP;
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Abstract
An optical detector includes a photodetector that converts signal light into an electric signal, and a mode filter. The photodetector includes a first port to which signal light of a first mode is input, and a second port to which signal light of a second mode is input. The mode filter includes a third port connected to the first port, and a fourth port connected to the second port. The mode filter passes the signal light of the first mode towards the first port to be output from the third port, passe the signal light of the second mode towards the second port to be output from the fourth port, removes the signal light of the second mode from the first port input from the third port, and removes the signal light of the first mode from the second port input from the fourth port.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile