Waveguiding losses of micro-structured fibres—plane wave method revisited |
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Authors: | Rafa? Kotyński Maciej Dems Krassimir Panajotov |
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Institution: | (1) Department of Physics, Warsaw University, Pasteura 7, Warsaw, 02-093, Poland;(2) Institute of Physics, Technical University of Łódź, Wólczańska 219, Lodz, 93-005, Poland;(3) Department of Applied Physics and Photonics, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium;(4) Institute of Solid State Physics, 72 Tzarigradsko Chaussee Blvd., Sofia, 1784, Bulgaria |
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Abstract: | We present a numerical method for the analysis of translationally invariant systems with anisotropic and dispersive electric
and magnetic properties. This material model enables us to calculate the mode structure of photonic devices such as photonic
crystal fibres (PCF) containing inclusions with anisotropic, conducting, magnetic, or negative index materials. The method
is based on the popular plane wave (PWM) discretisation scheme applied to the generalised vectorial transmission line equations.
The analysis is focused on the calculation of radiation losses. For this purpose we consider a uniaxial perfectly matched
layer (UPML) termination of the otherwise periodic system. We asses the accuracy of the method and the properties of spurious
modes created inside the UPML. |
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Keywords: | Plane wave method Perfectly matched layer Photonic crystal fibres Radiation losses Anisotropy Magnetic material |
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