Fiber optics: definition
Very fine glass or plastic wire which conducts light for fibroscopy, lighting or the transmission of digital data. This wire offers a significantly higher data rate than traditional coaxial cables.
The development of fiber goes hand in hand with the evolution of uses and the growing needs of individuals (individuals and businesses). However, it should be noted that the installation of optical fiber is generally observed in areas with high population density.
Fiber: an Orange submarine cable used to prevent earthquakes
Technology: The submarine fiber optic cable FLY-LION3, installed by Orange Marine to connect Mayotte to the global Internet will be used to prevent seismic activity in the region. Enough to reaffirm the importance of Internet backbones.
Beyond connecting geographic areas to the Web, submarine fiber optic cables can have other unusual uses. Another example with a use case communicated this Tuesday by Orange, one of the main French players in submarine cabling via its subsidiary Orange Marine.
The historic operator and the members of the consortium behind the FLY-LION3 cable - which has connected Mayotte since October 10 to the global Internet - announced on Tuesday the signing of an agreement with the Institut de physics of the Paris globe . The object of this agreement? Provide this cable, connecting over 400 km Moroni (Grande Comore) to Mamoudzou (Mayotte) for the detection of seismic movements in this risk zone.
To this end, a pair of optical fibers from the cable will be made available to the Mayotte Volcanological and Seismological Monitoring Network (IPGP) in order to test a new technique for listening to seismic movements in the region. The institute will thus be able to rely on surveys from a 50 km section of this cable from the locality of Kaweni towards the south-east of Mayotte. To do this, it will notably use the DAS system technology (for Distributed Acoustic Sensor), developed as part of a European project by the ESEO Group, the Acoustics Laboratory of the University of Le Mans and the 'IPGP. This will equip the dedicated portion of the FLY-LION3 cable with the equivalent of thousands of seismometers distributed along the fiber for vibration measurement purposes.
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