optical fiber have made the communication rapid annd fast . it is made up of plastic or glass wher light travels in long distance by phenomenon of total internal reflection .
in the transmission line fibers are spread from the one place . the bundle of fibers covers the all respective prts with out any void , this way teh light behaves in one fiber as a reflected . the other part of fiber .in the same frequency of light .thewallact as a boundry to reflect the light from the original pth , in next fiber refraction of ligh means straight movement , cause the light travel some distance .then walls reflect the light . this way light or any wavestravesls a longdistance .
in the trasmission of the tv the light energy is converted in to sound energy trogh accounstic or booster at receiving end .
same the amplifier are use ful to do the respective function .
uses
revolution in telecommunication.telphone
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