Broadband buzz: Periodical cicadas' chorus measured with fiber optic cables
Annapolis, MD; November 30, 2023—Hung from a common utility pole, a fiber optic cable—the kind bringing high-speed internet to more and more American households—can be turned into a sensor to detect temperature changes, vibrations, and even sound, through an emerging technology called distributed fiber optic sensing.
However, as NEC Labs America photonics researcher Sarper Ozharar, Ph.D., explains, acoustic sensing in fiber optic cables "is limited to only nearby sound sources or very loud events, such as emergency vehicles, car alarms, or cicada emergences."
Cicadas? Indeed, periodical cicadas—the ...

















