Lasers to Detect Earthquakes, Tsunamis with Undersea Optical Internet Cables

On the day of the tremor, Giuseppe Marra, a principal research scientist at the National Physical Laboratory in Teddington, England, was running an experiment that beamed an ultra-stable laser through underground fibre-optic cables. It was part of a larger effort to build one of the world’s most accurate clocks, capable of measuring time to the nearest quintillionth of a second. Almost a thousand miles away from his native Italy, Marra did not feel the quake, but he heard about it on the news. The next morning, he walked to work to review the results of his experiment.

---

Check out our Knowledge Center for our
Lasers 101 page and our Blog, Whitepaper, and FAQ collection for even more in-depth reading!