UK researchers say they have achieved data transmission speeds of 10Gbit/s via “li-fi” – wireless internet connectivity using light. The researchers used a micro-LED to transmit 3.5Gbit/s via each of the three primary colours – red, green, blue – combined that makes over 10Gbit/s.
Li-fi, or “light fidelity”, promises to be cheaper and more energy-efficient than existing wireless radio systems given the ubiquity of LED bulbs and the fact that lighting infrastructure is already in place.
Such a technique could one day work with existing (LED) light bulbs, promising higher speeds than current WiFi and increased security — since visible light can’t penetrate solid objects like walls...
Via Sepp Hasslberger