COMPUTER NETWORKING

Detailed explanation-1: -Optical fiber uses the optical principle of “total internal reflection” to capture the light transmitted in an optical fiber and confine the light to the core of the fiber. An optical fiber is comprised of a light-carrying core in the center, surrounded by a cladding that acts to traps light in the core.

Detailed explanation-2: -For total internal reflection to take place (i) light must travel from a denser medium to a rarer medium and (ii) the angle of incidence inside the denser medium must be greater than the critical angle. i.e., ∠i>∠c.

Detailed explanation-3: -Optical fibres works on the principle of total internal reflection. When light ray strikes at the internal surface of optical fibre cable called such that incidence angle is greater than critical angle, then incident light ray reflects in the same medium and this phenomenon repeats.

Detailed explanation-4: -Ans. Fibre optic cable uses the basic principle of total internal reflection. This cable has immense applications in telecommunication, medical applications, decoration, data transmission and providing internet facilities to the entire world.