| 摘要 |
A semi-analytic numerical method and one software reduction to practice of a means of finding the eigenmodes of optical fiber that has cylindrical symmetry. This includes fibers that have a radially varying index of refraction that can be described or approximated by one or more cylindrical layers of constant index of refraction. One advantage is that the method provides a small set of numerical coefficients (four per layer) used for analytic evaluation of fields and intensities. Mode properties such as optical confinement (overlap) factors in any of the layers can be easily evaluated in terms of these coefficients and analytic expressions for Bessel function integrals.
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