Definitions for "Fiber optic"
Fiber is much more expensive than copper but goes longer distances more accurately because it fades much less with distance, and has a very low error rate (1 in 1012 ), being unaffected by RFI (RF interference). Speed of electrons in copper wire is about the same as light in fibre (.6 speed of light in a vacuum, or 180,000 km s-1) but light can be turned on faster than signals can be generated, and so light signals can be packed much more closely together, resulting in faster switching and faster network.
Cable made up of glass filament that transmits data using light.
A cable that uses light to communicate; the fastest and most noise-resistant cable available for network wiring, but also the most expensive.