We report on methods to monitor the transmission path in optical networks using a correlation-based OTDR technique with direct and coherent detection. A high probing symbol rate can provide picosecond-accuracy of the fiber propagation delay, while a sensitive phase detection with a high repetition rate allows the monitoring of dynamic effects in the vicinity of the fiber. We discuss various approaches to evaluate the measured traces and show the results of a few monitoring applications.
@article{arxiv.2306.03455,
title = {Monitoring of Optical Networks Using Correlation-Aided Time-Domain Reflectometry with Direct and Coherent Detection},
author = {Michael H. Eiselt and Florian Azendorf and Andre Sandmann and Florian Spinty and Mirko Lawin},
journal= {arXiv preprint arXiv:2306.03455},
year = {2023}
}
Comments
Invited paper to OECC 2023, Shanghai, July 2-6, 2023