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. 12, 2021
Filed:
Jan. 20, 2021
Fujitsu Limited, Kawasaki, JP;
Setsuo Yoshida, Inagi, JP;
Takahito Tanimura, Yokohama, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A monitoring device includes a processor configured to compensate an electric field signal generated from an optical signal alternately for a chromatic dispersion and a nonlinear distortion in the optical signal in each of virtual sections of a transmission line, evaluate a quality of a compensated electric field signal, select the virtual sections sequentially, set a first compensation quantity of the chromatic dispersion according to a length of each of the virtual sections, search for a third compensation quantity of the nonlinear distortion for a selected virtual section when the quality satisfies a predetermined condition under an assumption that no nonlinear distortion is produced in other virtual sections, search for a second compensation quantity of the nonlinear distortion by setting an initial value of the second compensation quantity to the third compensation quantity, and monitor a power distribution of the optical signal based on the first and second compensation quantities.