Monitoring optical fibers using two dissimilar algorithms on a single monitoring system
US12359964B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2022 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Jul 19, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/186
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided for monitoring optical cable for disturbance events by providing dual monitoring systems where optical signals are received from at least one optical fiber of the cable which are modified by disturbance events. Two separate and distinct algorithms are applied to the received optical signals to generate first and second outputs related to the disturbance event where in a control system information from the first and second outputs is used to determine if an alarm should be issued. The monitoring systems can use a single DAS system and operate on the same data independently preferably using one algorithm which uses ZONE processes to obtain data about different zones in the fiber. Alternatively two DAS systems can be used, one DAS system and one ZONE system or two ZONE systems. In all cases weather data can be used to assist the two algorithms in determining the presence of false alarms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.