Google Research

Sub-Hertz Spectral Analysis of Polarization of Light in a Transcontinental Submarine Cable

ECOC 2020; 46th European Conference on Optical Communication, Brussels (2020), pp. 1-3


We report on a field-trial over the Curie cable connecting USA to Chile. We detected environmental changes through measurements of polarization of light. Seismic waves stemming from moderate-size earthquakes caused perturbations in the 0.5-3Hz range, suggesting that transcontinental cables may be used to detect earthquakes.

Learn more about how we do research

We maintain a portfolio of research projects, providing individuals and teams the freedom to emphasize specific types of work