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Range-scalable distributed acoustic sensing with EDFA repeaters demonstrated over 2227 km

We demonstrate a new, to the best of our knowledge, range-scalable repeatered distributed acoustic sensing (DAS) solution sharing technology with existing long-haul subsea telecom networks capable of low noise and high spatial and temporal resolution. Single ended DAS interrogation through a 2227 km...

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Bibliographic Details
Published in:Optics letters 2025-01, Vol.50 (1), p.25
Main Authors: Rønnekleiv, Erlend, Sørgård, Trygve, Klimentov, Dmitry, Tolstik, Nikolai, Waagaard, Ole Henrik, Jacobsen, Joacim, Stabo-Eeg, Frantz, Sab, Omar Ait, Calsat, Alain, Plantady, Philippe, Brenne, Jan Kristoffer
Format: Article
Language:English
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Summary:We demonstrate a new, to the best of our knowledge, range-scalable repeatered distributed acoustic sensing (DAS) solution sharing technology with existing long-haul subsea telecom networks capable of low noise and high spatial and temporal resolution. Single ended DAS interrogation through a 2227 km line comprising 39 repeatered fiber spans is demonstrated with a 10 m spatial resolution, a 1.78 kHz sampling rate, and a strain resolution of 35 pε/√Hz for the outermost span. The technique allows for many DAS channels to be wavelength multiplexed on a single fiber pair. Addressing of spans with add/drop (A/D) multiplexers (MUX) is demonstrated with
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.542267