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Conferences > OFS > 2020 > T2A > T2A.3

Real-time phase-recording DAS in 171 km low-loss fiber

Ole Henrik Waagaard, Erlend Rønnekleiv, Aksel Haukanes, Frantz Stabo-Eeg, Dag Thingbø, Stig Forbord, Svein Erik Aasen, and Jan Kristoffer Brenne

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Abstract

We demonstrate sustained real-time phase-recording distributed acoustic sensing (DAS) in 148 km standard SMF28e and 171 km low-loss OFS TeraWave SCUBA 125 fibers without inline amplification. Low noise and high optical dynamic range are obtained by combining swept frequency interrogation and a very low phase noise laser.

© 2020 The Author(s)

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