Determination Of Refractive Index From Multi-Wavelength Effective Index Data For Slab And Channel Waveguides

29 January 1985

proceedings article
Published by SPIE-Intl Soc Optical Eng

Vol. 517, 142-146
https://doi.org/10.1117/12.945150

Abstract

A technique was developed that uses bulk and effective indices measured at several wavelengths to determine index profiles in slab and channel waveguides. This technique involves the minimization of a functional J used to match the square of measured effective indices with those calculated. Effective indices are calculated from a modal analysis of a Galerkin type. J is minimized with respect to a number of parameters that are used to describe the refractive index appearing in the reduced wave operator and, in this way, the "inverse problem" of determining index profiles from measured effective indices is solved. Results are reported for slab and channel waveguides.© (1985) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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