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. 19, 2021
Filed:
Mar. 20, 2019
Nec Corporation, Tokyo, JP;
Takanori Inoue, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
To reduce deterioration of signal quality, an optical transmission apparatus comprises a transmission means for outputting an optical signal, and a multiplexing device for outputting a wavelength multiplexed optical signal including the optical signal inputted from the transmission means, wherein the multiplexing device includes an input port that is set to transmit a first wavelength band of the optical signal inputted from the transmission means, an intensity adjustment unit that can adjust an amount of optical attenuation for each predetermined wavelength band, and adjusts the amount of optical attenuation of an edge band of the first wavelength band of the optical signal transmitted through the input port to be smaller than the amount of optical attenuation of a central band of the first wavelength band, and an output port that outputs a wavelength multiplexed optical signal including the optical signal with the adjusted amount of optical attenuation.