Breakthrough in light-based technology enables GPS-free navigation

Researchers from the University of Twente have made a significant advancement in light-based chip technology by integrating sound-controlled light, a technique based on Stimulated Brillouin Scattering (SBS). This breakthrough allows for the miniaturization of atomic clocks, which can be used for navigation without relying on GPS, potentially revolutionizing satellite and drone navigation systems. The integration of SBS into thin-film lithium niobate chips provides new possibilities for the development of high-performance components like sub-hertz lasers, ultra-selective filters, and Brillouin amplifiers. These advancements open the door to innovations in telecommunications, 6G networks, and interference mitigation. The ability to control light with sound offers exciting new prospects for the future of photonics, pushing the technology beyond its traditional uses in optical communication. By enabling precise timekeeping and miniaturized atomic clocks, this research could lead to significant improvements in navigation systems that do not depend on GPS, offering potential for autonomous systems to operate more efficiently and securely.