Fibre Optics noise reduced 

Fibre Optics
Explain the construction of an optical fibre with a neat diagram.
Define the following terms - Critical angle of incidence, Acceptance angle.
Define the following terms- Numerical Aperture and Total Internal Reflection.
What do you mean by total internal reflection? With a neat diagram, explain the concept of total internal reflection.
Mention the conditions for Total Internal Reflection.
Differentiate between step index fibre and graded index fibre.
What is the advantage of graded index optical fibre over the step index optical fibre?
Why would you recommend the use of optical fibre in communication system?
Distinguish between single mode and multimode fibres.
Derive the expression for numerical aperture for a step index optical fibre.
Explain fibre optic communication system with a diagram. What are advantages of using optical fibre?
Describe types of optical fibres.
Why would you recommend optical fibre in communication network?
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