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1 Opto-Electronics Review

1 2012

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Comparison of numerical methods for light propagating in fibers with high steps of refractive index

Zegadło K. B., Karpierz M. A.

Opto-Electronics Review

2012

Vol. 20, No. 1

61-66

Fast development of complex structures like microstructural fibers, photonic nanowires or slot waveguides requires numerical tools to predict a light propagation. There are many works concerning weakly guided case, but the microstructural fibers need algorithm for a high step of the refractive index. In this paper, three approximate methods are compared. The comparison concerns a structure consisting of circular cores surrounded by cladding for different values of the refractive index steps. Application of these methods in chromatic dispersion case is also presented. It is shown that certain conditions prefer two dimensional scalar algorithms (based on approximated methods) than three dimensional ones. This allows us to implement more efficient and less complicated methods.