Physics, asked by aditya666, 1 year ago

prepare a project about various uses of optical fibres in our daily life

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Answered by prmkulk1978
9

Optical Fibre: An optical fibre is very thin fibre made of glass or plastic having radius about a micrometer (10-6 m). A bunch of such thin fibres form a light pipe.
Working: Because of the small radius of the fibre, light going into it makes a nearly glancing incidence on the wall. The angle of incidence is greater than the critical angle and hence total internal reflection takes place. The light is thus transmitted along the fibre.
Uses:
¤ Optical fibres are used by doctors in 'Endoscope' to see all organs inside the human body. For example throat, intestines... etc.
¤ Optical fibres are used to transmit communication signals through light pipes.
¤ Optical fibres are used in International telephone cables laid down under the sea.

 




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