, Volume 13, Issue 1, pp 71-83

A general approach to the numerical determination of modal propagation constants and field distributions of optical fibres

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Abstract

A new approach to modal propagation for optical fibres with arbitrary refractive index profile, based on the Bubnov-Galerkin method, is developed. The theory furnishes an accurate description of modal propagation constants and field distributions. When tested for step-index and truncated parabolic profiles the method is found to agree with the known exact results.