18887071. OPTICAL TRANSMISSION LINE MONITORING DEVICE AND OPTICAL TRANSMISSION LINE MONITORING METHOD (Fujitsu Limited)
OPTICAL TRANSMISSION LINE MONITORING DEVICE AND OPTICAL TRANSMISSION LINE MONITORING METHOD
Organization Name
Inventor(s)
Junichi Sugiyama of Kawasaki JP
OPTICAL TRANSMISSION LINE MONITORING DEVICE AND OPTICAL TRANSMISSION LINE MONITORING METHOD
This abstract first appeared for US patent application 18887071 titled 'OPTICAL TRANSMISSION LINE MONITORING DEVICE AND OPTICAL TRANSMISSION LINE MONITORING METHOD
Original Abstract Submitted
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.