Digital Longitudinal Monitoring refers to the continuous, systematic collection and analysis of digital data over an extended period to track changes, trends, and patterns. This approach leverages digital tools and technologies to monitor various aspects, such as health metrics, environmental conditions, user behavior, or system performance, providing insights into how these factors evolve over time.
We report the first trial of network tomography over a live network in a multi-domain environment. We visualize end-to-end optical powers along multiple routes across multiple domains solely from a commercial B00G transponder, enabling performance bottleneck localization, power and routing optimization, and lightpath provisioning.
We report the first field demonstration of 4D link tomography using a commercial transponder, which offers distance, time, frequency, and polarization-resolved monitoring. This scheme enables autonomous transponders that identify locations of multiple QoT degradation causes.