For the optical fiber shown in the figure, find the minimum angle of incidence (0;) that will result in total internal reflection ifthe refractive index for the cladding (2) is 1.40 and the refractive index of the core is (A.) n₁ = 1.59 and (B.) ni 1.74.=Cone of acceptancen₁CoreCladding (n.)0A. 0; ≥B. O≥

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Answered: For the optical fiber shown in the…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter38: Refraction And Images Formed By Refraction

Section: Chapter Questions

Problem 124PQ

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A good quality camera “lens” is actually a system of lenses, rather than a single lens, but a side effect is that a reflection from the surface of one lens can bounce around many times within the system, creating artifacts in the photograph. To counteract this problem, one of the lenses in such a system is coated with a thin layer of material (n=1.28) on one side. The index of refraction of the lens glass is 1.68. What is the smallest thickness of the coating that reduces the reflection at 640 nm by destructive interference? (In other words, the coating’s effect is to be optimized for =640 nm .)
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