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Fiber end face refracted Rays n2 Fiber Cladding Accepatnce A Reflected ray Cone a nz Fiber Core n, Fiber Cladding Entrance rays (n

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 78P: The first-order Bragg angle for a certain crystal is 12.1°. What is the second-order angle?

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Question

Fiber end
face
refracted Rays
Fiber Cladding
b
Аcсеpatnce
Reflected ray
A
Cone
ni Fiber Core
n, Fiber Cladding
Entrance rays
(n<n1)
a) the critical angle 0c at the core - cladding interface.
b) the numerical aperture N.A. of the optical fiber
c) the angle of acceptance a max of the the optical fiber system.
d) Determine cut-off wavelength for step index fiber if the core radius(um) a = 4 (µm)
e) Determine maximum diameter of the core for single mode fiber if 1 =1.55 (µm)

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