Electronics and Communication Engineering - Microwave Communication - Discussion

3. 

In an optional fiber the refractive index of cladding material should be

[A]. nearly 1
[B]. very low
[C]. less than that of core
[D]. more than that of core

Answer: Option C

Explanation:

No answer description available for this question.

Mahendhar Reddy said: (Mar 15, 2017)  
According to me, the question should be an optical fiber.

Mohan Kumar S B said: (Jul 13, 2017)  
Optical communication works on the principle of Total Internal Reflection (TIR). For this, to happen the refractive index of the core should be more than cladding material.

RISHI NIGAM said: (Mar 25, 2022)  
This is the basic princile because as wave travels from from optically denser medium to optically rarer medium then it moves away from normal so in that case if we want total internal reflection for critical angle to come in action core should have high refractive index.

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