http://www.essaytrader.net Free web building tutorials http://www.essaytrader.net One of the most promising new communication systems involves converting information into impulses of light and channeling them to their destination inside fiber optic cables. Fiber optic cables are fine glass fibers that allow light to pass through them. Fiber optic technology is rapidly replacing electrical carrier lines for phone transmission. The advantages of fiber optics are many. Among them are greater clarity in transmission and the fact that a fiber optic carrier can carry a higher volume of information than copper wire. Light travels at a speed of 186,000 miles per second.