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Tag Archive: submarine optical fiber

  1. Fiber Optic Cables as Undersea Seismic Monitors?

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    Detecting ocean-floor seismic activity is crucial to our understanding of the interior structure and dynamic behavior of the Earth. However, with 70% of the planet’s surface covered by water and only a handful of permanent, ocean-bottom seismometer stations, very little overall seismic activity is actually recorded.


    Now, a group of researchers from the United Kingdom, Italy and Malta have found a way to use submarine fiber optic cables already deployed on the ocean floor as seismic detectors. In a paper published in the journal Science, the research group outlines how they discovered this capability and how it would operate.


    Giuseppe Marra, a member of the group, was testing an underground fiber cable between two locations in the United Kingdom. Noticing a small slowdown in signal delivery, he traced it to tiny vibrations bending the light. He then determined that the vibrations were caused by a remote earthquake. This discovery inspired him to explore using fiber optic cables as seismic detectors.



February 12, 2019 - Congratulations to Michele Neifing for being named BICSI ICT Woman of the Year. - Read Press Release! >>

February 4, 2019 - In Photonics Spectra, Andrei Stolov outlines a study covering the effect of harsh undersea and downhole conditions on specialty optical fibers. - Read Article! >>

January 28, 2019 - FEC Completes Expansion of Optical Fiber Production Capacity at OFS. - Read Press Release! >>