The relative refractive index difference between the core axis and the cladding of
a graded index fiber is 0.7% when the refractive index at the core axis is 1.45.
Estimate values for the numerical aperture of the fiber when:
(a) the index profile is not taken into account; and
(b) the index profile is assumed to be triangular.
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relative refractive index difference between the core axis and the cladding of a graded index fiber
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