Fiber Optic Cable

Fiber optic cable is made of pure glass. Digital signals are transmitted in the form of modulated light which travel on strands of fiber for long distances. Fiber has an advantage over copper in that it can carry far more information over longer distances. Modulating light on thin strands of glass produces major benefits in high bandwidth, relatively low cost, low power consumption, small space needs, & insensitivity to EMF (see EMF) interference.