Abstract

Calculations of the electric field distribution within and around an infinite circular dielectric cylinder, having a relative index of refraction of 1.53 and illuminated with plane-wave radiation of wavelength λ, have been performed for size parameters ranging from 39 to 51. Results for size parameters that satisfy resonance conditions for various natural modes of oscillation of the cylinder (mode number n = 53; order numbers l = 1–5) clearly illustrate the physical significance of n and l and show that the internally reflected circumferential waves are localized near, but not confined to, the cylinder surface.

© 1981 Optical Society of America

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