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. 22, 2026
Filed:
Sep. 17, 2024
1finity Inc., Kawasaki, JP;
Junichi Sugiyama, Kawasaki, JP;
Atsushi Kanai, Kawasaki, JP;
1FINITY Inc., Kawasaki, JP;
Abstract
Monitoring device is used in optical transmission system that transmits frames between first and second nodes via optical transmission line. First SOP data representing SOP detected in the first node and second SOP data representing SOP detected in the second node are stored in storage. Processor detects first time at which polarization fluctuation component caused by polarization fluctuation arrives at the monitoring device and generates reference data by extracting the first SOP data near the first time. The processor detects second time at which polarization fluctuation component caused by the polarization fluctuation arrives at the second node by searching for a section having SOP similar to the SOP represented by the reference data in the second SOP data. The processor determines a position where the polarization fluctuation occurs based on the first time and the second time.