DARPA creates hollow-core optical fiber for faster networks, more accurate sensors | ExtremeTech | Military&Defense | Scoop.it
DARPA has succeeded in creating hollow-core photonic-bandgap optic fiber, which allows light to travel along its length at around 99.7% the speed of light, or a 30% improvement over conventional (silica glass) optic fibers.

Via Cynthia Pols