Researchers are studying ways to use existing fiber-optic cables as distributed sensors to collect data on city road conditions. Verizon and NEC recently conducted a proof-of-concept field trial
Observing this "backscatter" phenomenon through a technique called Distributed Acoustic Sensing (DAS), the 20 km long cable was turned into a bed of 10,000 motion sensors that could detect seismic activity with picometer precision.
Working from a beachside shack on California's Monterey Bay, Nate Lindsey fired a stream of infrared laser pulses down a long fiber-optic cable extending onto the ocean floor. The miles-long cable had been there for a decade...but Lindsey, a geoscientist at UC Berkeley, was trying something new
Scientists discovered California’s newest known offshore faults by borrowing a garden hose-size fiber optic cable that spans the seafloor of Monterey Bay and turning it into an ad-hoc seismic array….
A recent proof-of-concept field trial from Verizon and NEC demonstrated the ability “to use network infrastructure with existing fiber-optic cables already laid in the ground as distributed optical sensors to collect information on city traffic patterns