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:
Jan. 09, 2024
Filed:
Jul. 21, 2022
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Makoto Hasegawa, Sapporo, JP;
Atsushi Kodama, Kawasaki, JP;
Norifumi Shukunami, Yokohama, JP;
Tomoaki Takeyama, Yokohama, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/02 (2006.01); H04B 10/2507 (2013.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
H04J 14/0221 (2013.01); G02B 6/4286 (2013.01); H04B 10/2507 (2013.01); H04J 14/0213 (2013.01);
Abstract
A fiber-optic communication apparatus includes an optical monitor that monitors a WDM signal in which optical signals of multiple channels are multiplexed, a processor that calculates a control value for controlling an optical power of the WDM signal, based on a power spectrum detected by the optical monitor, in a unit interval of frequency narrower than a channel bandwidth of the WDM signal, and an optical power adjusting mechanism that adjusts the optical power of the WDM signal in the unit interval of frequency based on the control value.