18 November 2008 Finite element modeling of microstructured optical fibers: leaky modes, twisted geometries, and spatial Kerr solitons
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Proceedings Volume 7138, Photonics, Devices, and Systems IV; 71381I (2008) https://doi.org/10.1117/12.818040
Event: Photonics, Devices, and Systems IV, 2008, Prague, Czech Republic
Abstract
Microstructured optical fibers have much more degrees of freedom concerning the geometries and index contrasts than step-index fibers. This richness opens totally new fields of application for fiber optics. The finite element method appears as an extremely versatile tool to compute the propagation modes in such systems as it allows to take into account arbitrary geometries of the cross section and also anisotropic and inhomogeneous (i.e. not only piecewise constant) dielectric permittivities. In this paper, we review some more advanced features: how to compute leaky modes (crucial for the understanding of such kind of fibers) by using perfectly matched layers, how to use helicoidal coordinate systems to determine the influence of a twist on the modes via a two-dimensional model (using equivalent materials), and how to compute spatial solitons in fibers involving Kerr optical medium by taking into account the refractive index inhomogeneities caused by the nonlinearity.
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André Nicolet, André Nicolet, Frédéric Zolla, Frédéric Zolla, Gilles Renversez, Gilles Renversez, Yacoub Ould Agha, Yacoub Ould Agha, Fabien Drouart, Fabien Drouart, } "Finite element modeling of microstructured optical fibers: leaky modes, twisted geometries, and spatial Kerr solitons", Proc. SPIE 7138, Photonics, Devices, and Systems IV, 71381I (18 November 2008); doi: 10.1117/12.818040; https://doi.org/10.1117/12.818040
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