Optical interferometry-based array of seafloor environmental sensors using a trans-oceanic submarine cable

G. Marra*, David Fairweather, V. Kamalov, P. Gaynor, M. Cantono, S. Mulholland, B. Baptie, J. C. Castellanos, G. Vagenas, J-O. Gaudron, J. Kronjäger, I. R. Hill, M. Schioppo, I. Barbeito Edreira, K. A. Burrows, C. Clivati, D. Calonico, Andrew Curtis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Optical fiber–based sensing technology can drastically improve Earth observations by enabling the use of existing submarine communication cables as seafloor sensors. Previous interferometric and polarization-based techniques demonstrated environmental sensing over cable lengths up to 10,500 kilometers. However, measurements were limited to the integrated changes over the entire length of the cable. We demonstrate the detection of earthquakes and ocean signals on individual spans between repeaters of a 5860-kilometer-long transatlantic cable rather than the whole cable. By applying this technique to the existing undersea communication cables, which have a repeater-to-repeater span length of 45 to 90 kilometers, the largely unmonitored ocean floor could be instrumented with thousands of permanent real-time environmental sensors without changes to the underwater infrastructure.
Original languageEnglish
Pages (from-to)874 - 879
JournalScience
Volume376
Issue number6595
DOIs
Publication statusPublished - 19 May 2022

Fingerprint

Dive into the research topics of 'Optical interferometry-based array of seafloor environmental sensors using a trans-oceanic submarine cable'. Together they form a unique fingerprint.

Cite this