refractive index n₁

University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter3: Interference
Section: Chapter Questions
Problem 47P: To save money on making military aircraft invisible to radar, an inventor decides to coat them with...
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2.
=
A planar dielectric waveguide with the core refractive index n₁ 1.56 and the
1.47 is used to transmit light of wavelength o 750 nm. Suppose
cladding index n₂
=
=
the width of the waveguide is d = 1.0 μm:
(a) Determine the critical angle 0c at the interface.
(b) Calculate and plot the phase change on reflection o, as a function of angle of
incidence in the range 0c < 0</2, for the case of a TE wave.
= 1,
(c) Calculate the value of the angle of incidence Om corresponding to mode m =
and the corresponding phase change $1.
(d) Determine the skin depth for the evanescent wave in medium n2, for this mode.
Transcribed Image Text:2. = A planar dielectric waveguide with the core refractive index n₁ 1.56 and the 1.47 is used to transmit light of wavelength o 750 nm. Suppose cladding index n₂ = = the width of the waveguide is d = 1.0 μm: (a) Determine the critical angle 0c at the interface. (b) Calculate and plot the phase change on reflection o, as a function of angle of incidence in the range 0c < 0</2, for the case of a TE wave. = 1, (c) Calculate the value of the angle of incidence Om corresponding to mode m = and the corresponding phase change $1. (d) Determine the skin depth for the evanescent wave in medium n2, for this mode.
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