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:
Jun. 02, 2026
Filed:
Sep. 24, 2021
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventors:
Takahiro Suganuma, Osaka, JP;
Takemi Hasegawa, Osaka, JP;
Tetsuya Hayashi, Osaka, JP;
Hirotaka Sakuma, Osaka, JP;
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/02 (2006.01); G02B 6/036 (2006.01);
U.S. Cl.
CPC ...
G02B 6/02042 (2013.01); G02B 6/03627 (2013.01);
Abstract
A multi-core optical fiber includes: a pair of cores; and a cladding that covers both of the pair of cores. A diameter of the cladding is 124 μm or more and 126 μm or less. A distance between centers of the pair of cores is 46.5 μm or less. Cross talk between counter-propagating cores at a wavelength of 1550 nm is −30 dB/100 km or less.
Suganuma, Takahiro. (2026). Multicore optical fiber and optical transmission system (U.S. Patent No. 12645025). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12645025
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile