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:
Oct. 28, 2025
Filed:
Jan. 29, 2024
Nec Corporation, Tokyo, JP;
Yusuke Shimomura, Tokyo, JP;
Hitoshi Takeshita, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A transmission direction determination apparatus includes: a first lens configured to collimate light propagating from one multi-core fiber of two multi-core fibers to the other multi-core fiber of the two multi-core fibers; a second lens configured to focus the light that has propagated from the first lens; a partially reflective mirror configured to reflect part of the collimated light and including a first surface and a second surface; a first photodetector disposed on a side of the first surface of the partially reflective mirror and configured to measure an intensity of signal light reflected by the partially reflective mirror; and a second photodetector disposed on a side of the second surface of the partially reflective mirror and configured to measure an intensity of signal light reflected by the partially reflective mirror.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile