fiber-optic or fiber-optics

A method of transmitting light beams along optical fibers (which are actually bundles of glass). Optical fibers are intended to replace the copper wires employed in electronic networks. A light beam, such as that produced by a laser, can be modulated to carry data (information), and the result is very effective: high-speed transmission, clear signals, multiple streams of data, cost-effective performance. In fact, it's been said that fiber-optic technology is the greatest transmission medium currently known.