Abstract

A method is presented for calculating the profile of the refractive index of an optical waveguide, n(x) = n₀ + f(x), from the measured coupling angles for any physically justified functional form of f(x). As an example, we present the results of a Ti in-diffused LiNbO₃ waveguide for which f(x) fits the sum of two Gaussians.

© 1980 Optical Society of America

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