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:
Jun. 29, 2021
Filed:
Feb. 04, 2020
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Shoichiro Oda, Fuchu, JP;
Setsuo Yoshida, Inagi, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/25 (2013.01); H04B 10/071 (2013.01); H04B 10/079 (2013.01); H04J 14/06 (2006.01);
U.S. Cl.
CPC ...
H04B 10/071 (2013.01); H04B 10/0799 (2013.01); H04B 10/07957 (2013.01); H04B 10/25 (2013.01); H04J 14/06 (2013.01);
Abstract
An optical transmission apparatus, includes, a light source configured to output a plurality of light beams having different wavelengths to an optical fiber, a receiver configured to receive, from the optical fiber, a reflected light beam corresponding to each of the wavelengths of the plurality of light beams, and a signal processing circuit configured to estimate a polarization fluctuation portion based on a polarization state of the received reflected light beam corresponding to each of the plurality of wavelengths.