Fault Detection is the process of identifying and diagnosing issues or malfunctions within an optical system. These systems rely on light transmission through optical fibers or other components for data communication or sensing, and faults can disrupt their functionality.
We report the first field verification of fault localization in an optical line system (OLS) by integrating digital longitudinal monitoring and OLS calibration, highlighting changes in physical metrics and parameters. Use cases shown are degradation of a fiber span loss and optical amplifier noise figure.
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