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:
Apr. 11, 2023
Filed:
Mar. 13, 2017
Nec Corporation, Tokyo, JP;
Takefumi Oguma, Tokyo, JP;
Yurie Matsuyama, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A node () includes multiplexing unit () that multiplexes a plurality of subcarrier signals for performing optical wavelength multiplexing communication into a wavelength group signal; output unit () that outputs the multiplexed wavelength group signal to an optical transmission line; pre-multiplexing level correction unit () that corrects a level deviation between the subcarrier signals before the multiplexing based on an optical level of the wavelength group signal in the output unit (); and post-multiplexing level correction unit () that corrects a level deviation of the wavelength group signal after the multiplexing including the corrected subcarrier signals based on the optical level of the wavelength group signal in the output unit ().