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A modified zigzag-ray model of light propagation in a dielectric slab waveguide

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2 Author(s)
Nemoto, S. ; Osaka Univ., Osaka, Japan ; Yip, G.L.

A modified zigzag-ray model of light propagation, in which the Goos-Hänchen shift and the associated time delay are included, is used to examine the applicability of a conventional zigzag-ray model for the calculation of the impulse response of a multimode cladded optical fiber. As a model of the fiber, a symmetric slab waveguide is considered, and it is shown that there exists a considerable discrepancy in the durations of the impulse responses calculated from the modified and conventional ray models, even for a very large value of the film thickness to wavelength ratio.

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Quantum Electronics, IEEE Journal of  (Volume:13 ,  Issue: 4 )