Answers are grounded in this paper and cite their sources.
We report, for the first time to our knowledge, the detection and localization of a loss-inducing perturbation along more than 20-km-long test fiber based on the analysis of transmitted and Rayleigh backscattered powers of an unmodulated continuous-wave light source. Localization of a strong disturbance with an estimated accuracy of 1 m near the source end and 7.5 m near the remote end of the 21.067-km-long single-mode sensing fiber is demonstrated.
No takes yet. Share an insight, caveat, or question.
A 2005 study studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: