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. 07, 2021
Filed:
Jan. 16, 2018
Nec Corporation, Tokyo, JP;
Takanori Inoue, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
A branch units branches an optical signal by the number of wavelength intervals. Each band division unit generates a band division signal in which a signal band is divided into N division bands and an odd channel and an even channel are separated from each other. Multiplexing units multiplex band division signals of the same signal band, and branch means output the multiplexed signal to an optical receiver. A control unit controls the wavelength selective switch included in the band division units based on information indicating a signal arrangement of the signals in the respective wavelength intervals, thereby causing a signal of a signal band in which a signal of a corresponding wavelength interval is present to be included in each band division signal.