Fiber-optic cables transmit large quantities of data at the speed of light. Devices such as modems, routers, televisions and personal computers use fiber-optic cables to receive and transmit all sorts of information. The fibers in these cables are made from fragile glass and many common problems result from tension, pressure or stress on the fibers. Dead, frayed or otherwise damaged cables usually cannot be fixed at home and must be replaced. Tips Writer Bio
