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A step index fibre has a relative refrac...

A step index fibre has a relative refractive index difference of 0.9%.Estimate the critical angle at the core -cladding interface,when the core index is 1.46.find the numerical aperture,if the source to fiber medium is air.

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To solve the problem step by step, we will follow the given information and apply the relevant formulas. ### Step 1: Understand the Given Information - Relative refractive index difference (Δ) = 0.9% = 0.009 (as a decimal) - Core refractive index (μ1) = 1.46 - We need to find the cladding refractive index (μ2) and the critical angle (θc) at the core-cladding interface. ### Step 2: Calculate the Cladding Refractive Index (μ2) ...
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