Fiber end face refracted Rays Fiber Cladding b Аcсеpatnce Reflected ray A Cone ni 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
Chapter3: Interference
Section: Chapter Questions
Problem 80AP: A Michelson interferometer with a He-Ne laser light source (=632.8nm) projects its interference...
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n1=1.5

n2=1.475

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)
Transcribed Image Text: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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