Derive the formula for numerical aperture of step index fibre and give its physical significance. The N.A. of an optical fibre is 0.5 and core refractive index is 1.54.

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written 6.9 years ago by

vermavarsha432 • 1.0k

modified 5.6 years ago by

sanketshingote • 100

Find the refractive index of cladding.

advanced engineering physics

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written 6.7 years ago by

vermavarsha432 • 1.0k

Numerical Aperture is the ability of fiber to collect the light from the source and save the light inside it by maintaining the condition of total internal reflection.

Consider a light ray entering from a medium of refractive index n0 into the fiber with a core of refractive index n1 …

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