These sensors ‘listen with light’ to guard Europe from subsea sabotage

Dutch tech scaleup Optics11 has launched an underwater monitoring system that uses light waves to “listen” for the presence of foreign objects. Called OptiBarrier, the system can detect enemy submarines, drones, and surface vessels from up to 150km away — without revealing its own position. “We listen with light,” the company’s CEO, Paul Heiden, told TNW. “That means our technology is entirely undetectable and can’t be jammed.” The standard method for listening underwater is through electromagnetic fields. Devices emit electromagnetic pulses and detect the presence of an object, such as a ship or submarine, based on the waves that bounce…This story continues at The Next Web