Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 41, Issue 19, Pages 6119-6125Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2023.3282447
Keywords
Failure localization; availability; Q-drops; field trial; monitoring; optical networks
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This article proposes a reliable and easy-to-deploy method for localizing failures in optical networks. By aggregating raw monitoring data from coherent transponders, strategic insights into network health can be generated.
We propose a reliable and easy-to-deploy method for localizing failures in optical networks with low added complexity. It essentially relies on the aggregation of raw monitoring data from coherent transponders; data readily accessible through streaming telemetry in modern optical networks. We first verify the reliability of our algorithm through extensive simulations over a European topology under realistic conditions. Then, we apply it to field data from a backbone network carrying live traffic. Here, we show how failure localization allows to generate strategic network health insights regarding link failure probabilities and mean time to repair. We notably underline the involvement of Q-drops in strong and localized deviations of both parameters.
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