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What is the largest thickness t
of a planar symmetric dielectric
waveguide with refractive
indices n₁ = 1.46 and n₂ = 1.50
for which there is only one TE
mode at free-space
wavelength λ = 1.3 µm?
option: a. 8
b. 3
c. 6
in [\mu m]
d. 1
e. 5

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