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:
Sep. 08, 2026
Filed:
Aug. 27, 2021
Ntt, Inc., Tokyo, JP;
Yuto Sagae, Musashino, JP;
Kazuhide Nakajima, Musashino, JP;
Taiji Sakamoto, Musashino, JP;
Takayoshi Mori, Musashino, JP;
Takashi Matsui, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
The present disclosure relates to an optical transmission system that transmits signal light by using a multi-core optical fiber having two or more cores as transmission paths, the optical transmission system including two or more transmitters that transmit signal light to adjacent cores, in opposite directions, of the cores, and two or more pump light oscillators that inject pump light into the same cores as transmission cores to which the signal light is transmitted of the adjacent cores such that the pump light propagates in the same directions as or directions reverse to the directions of the signal light, and perform distributed Raman amplification of the signal light by using the pump light, in which a signal light gain of the signal light transmitted from the transmitters is set such that a signal intensity ratio to a crosstalk noise intensity leaked from the adjacent transmission cores is high.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile