OPTICAL FIBERS
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An optical fiber is a glass or plastic fibre that carries light along its length without much attenuation or loss.
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The glass used to make optical fibers is pure.
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The repeater distances on long haul routes for optical fibers varies from 50 to 150 k
WHY OPTICAL FIBERS ?
In todays world where the spectrum of signals being communicated (Viz voice data, graphic, video, images etc) is incresing continously as also the fact that communication need is getting more & more real time, bandwidth of the communication medium is becoming more and more critical.
Posted by harishkragarwal 
