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A transatlantic communications cable does double duty Most previous work using telecommunications cables for sensing efforts treated the entire cable as a single sensor, and work that did use them for distributed sensing required ultrastable lasers
Optical interferometry–based array of seafloor environmental . . . Optical fiber–based sensing technology can drastically improve Earth observations by enabling the use of existing submarine communication cables as seafloor sensors Previous interferometric and polarization-based techniques demonstrated environmental sensing over cable lengths up to 10,500 kilometers
SMART cables - Wikipedia A SMART cable, or Science Monitoring And Reliable Telecommunications (SMART) cable, is a trans-ocean submarine communications cable that includes scientific instrumentation at multiple points along the cable for measuring environmental variables like temperature, pressure, or seismic acceleration
Trans‐Oceanic Distributed Sensing of Tides Over . . . Abstract Geophysical sensing in the open ocean is both costly and technically challenging Here we developed a novel distributed fiber optic sensing technique that employs microwave modulation for phase measurement in signals returned from submarine repeaters We transformed a trans‐Atlantic telecom cable into an 81‐sensor array and measured sub‐millihertz strains The strains correlate
Subsea cables could transform ocean monitoring | The . . . Using stretches of fibre optic cables as sensors could enable continuous, real-time monitoring of conditions at the bottom of oceans and seas, and below the planet’s surface, researchers say