Fiber Optics is the means and the technology by which telecommunications data is transmitted via pulsating light beams through cables that contain multiple glass or plastic rods or strands (optical fibers).

Optical fiber cable has performance advantages over its predecessor, copper, because it can send information such as voice messages, images and videos faster — nearly as fast as the speed of light. For this reason, fiber optics is increasingly replacing copper wire, which uses electrical impulses as a means of communication signal transmission. For long distance and high-performance data networks and telecommunication services, such as telephone, television and internet, fiber optics is the preferred transmission method.