Excitation efficiency of waveguide modes of optical fiber by laser beam scattering on a radially symmetric layer of core heterogeneities

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Authors: Shibelgut A. A., Litvinov R. V., Kirienko N. G.

Annotation: In the paper the results of numerical simulation of a monochromatic light beam scattering are presented. The light beam is propagated in a plane of transverse section of step-index optical fiber and on heterogeneities of its core which are localized in a thin radially symmetric layer. It has been shown that the existence of these heterogeneities is a cause of resonance dependence of an excitation efficiency of waveguide modes on the light beam shifted relative to fiber axis.

Keywords: optical fiber, core heterogeneities, light scattering, guided modes