It was in the beginning of 20th century where Hondros and debye theoretical and experimental study demonstrated that information can be transferred as a form of light through a dielectric waveguide.
The invention of clad waveguide structure raised the eyebrows of the scientists. The proposals by Kao and Hockham proved beneficial leading in the utilization of optical fiber as a communication medium.
Snell's Law of refraction states that the angle of incidence Ø1 and refraction Ø2 are related to each other and to the refractive index of the dielectrics. It is given by- n1sinØ1 = n2sinØ2 where n1 and n2 are the refractive indices of two mediums. Ø1 and Ø2 are angles of incidence and refraction.
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