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Proceedings Paper

Modified nonreciprocal waveguide formed at the interface between plasmonic metal and uniformly magnetized two-dimensional photonic crystal fabricated from magneto-optic material
Author(s): Sergey Eyderman; Vladimir Kuzmiak; Mathias Vanwolleghem
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Paper Abstract

We have demonstrated numerically that the interface of a metal and uniformly magnetized two-dimensional photonic crystal fabricated from a transparent dielectric magneto-optic (MO) material possesses a one-way frequency range where only a forward propagating surface plasmon polariton (SPP) mode is allowed to propagate. The nonreciprocity at the interface is introduced by the MO properties of the photonic crystal that is fabricated from Bismuth Iron Garnet (BIG, Bi3Fe5O12), a ferrimagnetic oxide which may be easily magnetically saturated by fields of the order of tens of mT. Therefore, this configuration allows to achieve sizable one-way bandwidth by using significantly smaller values of the external magnetic field than an analogous waveguide proposed by Yu1 which makes such a waveguide favorable for design of diode-like elements in optical integrated circuits. By using simple analytical model we have determined one-way frequency range which is consistent with the results obtained previously by using a MO aperiodic Fourier Modal Method (MO a-FMM). To investigate transport properties of the structures within this frequency range we have implemented finite-difference time-domain(FDTD) method, that allows calculating the propagation of EM waves through media with full tensorial magneto-optic permittivity. We examined the unidirectional transport properties of the proposed one-way waveguide and studied how the nonreciprocity depends on boundary conditions, for instance, by placing a perfect conducting mirror at the end of one-way waveguide.

Paper Details

Date Published: 17 May 2011
PDF: 9 pages
Proc. SPIE 8070, Metamaterials VI, 80700Y (17 May 2011); doi: 10.1117/12.888603
Show Author Affiliations
Sergey Eyderman, Institute of Photonics and Electronics (Czech Republic)
Vladimir Kuzmiak, Institute of Photonics and Electronics (Czech Republic)
Mathias Vanwolleghem, Institut d'Électronique Fondamentale, CNRS, Univ. Paris 11 (France)

Published in SPIE Proceedings Vol. 8070:
Metamaterials VI
Vladimir Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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