Optical fibre is used to transmit light signals from one place to another without any practical loss in the intensity of the light signal.the optical fibre cable consists of a glass core surrounded by a glass cladding and that again is surrounded by a jacket made up of plastic. The refractive index of glass used for makimg core is a little more than the refractive index of the glass used for making the cladding.
the main advantage of the optical fibre is that it can carry light of very high frequency such as 10^12 to 10^16 hz .and consequently a large no. Of messages can be transmitted through a single cable withou any risk of their intermixing.morever due to very little line loss the quantity of reception is vastly superior.there are two types of optical fibre
(1)monomode optical fibre
(2)multimode optical fibre
No comments:
Post a Comment