Modern communication systems often employ optical fibers to carry signals across or between devices, combining more than one function into a single circuit. However, signal transmission requires long optical fibers, which makes miniaturizing the device difficult. Instead of long optical fibers, scientists have started testing planar waveguides. Investigators now report on a laser-assisted study of a type of glass that shows promise as a material for broadband planar waveguide amplifiers.
Blasting tiny craters in glass, creating material to miniaturize telecommunication devices