3. Consider a step-index silica optical fibre operates at a wavelength of 0.92 µm which core diameter is 72 µm, n₁ = 1.522 and A = 0.071. (a) What are the numerical aperture NA and V parameter of this fibre? Approximately how many modes can it support? (b) Suppose the cladding is stripped away so that the core is in direct contact with air (n2 = 1.0). Recalculate the quantities in part (a).

3. Consider a step-index silica optical fibre operates at a wavelength of 0.92 µm which core diameter is 72 µm, n₁ = 1.522 and A = 0.071. (a) What are the numerical aperture NA and V parameter of this fibre? Approximately how many modes can it support? (b) Suppose the cladding is stripped away so that the core is in direct contact with air (n2 = 1.0). Recalculate the quantities in part (a).

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 75P: The structure of the NaCl crystal forms reflecting planes 0.541 nm apart. What is the smallest...

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