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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.

     

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December 11, 2018 - Congratulations to Mike Hines on his election as 2019 Vice Chair and continuing Board Member of the Fiber Optic Sensing Association (FOSA). - Read More! >>


December 7, 2018 - Join us on December 20 for a webinar on “Fiber Optic Infrastructure Systems for Large-Scale Data Centers.” - Register Here! >>


December 7, 2018 - Roger Vaughn discusses “The Next Wave – Building Tomorrow’s Network Today” at January’s BICSI Winter Conference. - Learn More! >>