Explain the action of optical fibres
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An optical fiber is a cylindrical dielectric waveguide (nonconducting waveguide) that transmits light along its axis, by the process of total internal reflection. ... To confine the optical signal in the core, the refractive index of the core must be greater than that of the cladding.
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The total internal reflection is the main cause for optical fiber . The optical fiber is made up of glass
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