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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University Physics Volume 3
Physics
ISBN:
9781938168185
Author:
William Moebs, Jeff Sanny
Publisher:
OpenStax