How does information travel in fibre optic cables?

You could hook your computer up to a laser, which would convert electrical information from the computer into a series of light pulses. Then you'd fire the laser down the fiber-optic cable. After traveling down the cable, the light beams would emerge at the other end. read more

Fiber-optic cables carry information using optical or light-based technology. Electrical data is converted into a series of light pulses. Light travels down a fiber-optic cable by bouncing repeatedly off the walls. read more

Modern fiber optic cables can carry a signal quite a distance -- perhaps 60 miles (100 km). On a long distance line, there is an equipment hut every 40 to 60 miles. The hut contains equipment that picks up and retransmits the signal down the next segment at full strength. read more