introduce a new set of component failure modes that might benefit from
monitoring.
Using a dispersion monitor together with noise monitoring provides a highly
effective combination for both fault localization and diagnosis (i.e. determining
the root cause). Indeed, it may be desirable for management systems to mitigate
or compensate these degrading effects separately. In a system that utilizes OCM
and active dispersion compensation for control of transmission, this OPM
combination might be implemented with little additional hardware. Real-time
dispersion monitors that can measure the amount of distortion can be used to
trigger alarms or feedback to active dispersion compensators [32, 44]. Here we
provide a brief overview of several advanced monitoring ...