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That Was Then, This Is Now: Fiber Optic Cables Find New Use as Seismic Sensors

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ROBIN RILEY, WEB EDITOR, [email protected]

BERKELEY and STANFORD, Calif., Dec. 11, 2017 — The decade that gave us the Sony PlayStation also gave us dark fiber — an excess of optical fiber cables installed underground, mostly in the 1990s, before advances in data transmission reduced the need for all those cables. Now, research teams on the earthquake-prone West Coast of the U.S. are putting dark fiber optic cables to use as sensor arrays for seismic monitoring. Map shows location of a three-mile, figure-8 loop of optical fibers installed beneath the Stanford campus as part of the fiber optic seismic observatory. Courtesy of Stamen Design and the Victoria and Albert...Read full article

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    Published: December 2017
    Glossary
    dark fiber
    Unused fiber; fiber that has been installed but reserved for future use. Carrying no light.
    Research & TechnologyeducationAmericasfiber opticsLasersSensors & Detectorsenvironmentindustrialfiber-optic sensorsImagingearthquakesseismic sensorsdark fiberdistributed acoustic sensinglaser interrogatorsoptical fibersfiber optic seismic observatory

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