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Q: Quantenoptik und Photonik
Q 25: Photonische Kristalle II
Q 25.3: Vortrag
Dienstag, 14. März 2006, 14:15–14:30, HI
Integrated Photonic Crystal Circuits: Comparison of FDTD Simulations and Scattering Matrix Calculations Based on Wannier Functions — •Javad Zarbakhsh1, Daniel Hermann2,3, Sergei Mingaleev2,3, Kurt Hingerl1, and Kurt Busch2,3,4 — 1Christian Doppler Labor für oberflächenoptische Methoden, Institut für Halbleiter und Festkörperphysik, Johannes-Kepler-Universität Linz — 2Institut für Theoretische Festkörperphysik, Universität Karlsruhe — 3DFG Forschungszentrum Center for Functional Nanostructures (CFN), Universität Karlsruhe — 4Institut für Nanotechnologie, Forschungszentrum Karlsruhe in der Helmholtz-Gemeinschaft
We present a detailed comparison between Finite Difference Time Domain (FDTD) simulations and Scattering Matrix calculations based on Wannier functions [1,2] for the characterization of large-scale photonic crystal circuits. A complex photonic crystal circuit consisting of several waveguides, splitters, and bends, which have individually been optimized, using the S-matrix method based on Wannier functions, has been studied. Our results show that the Scattering Matrix formalism is much more efficient than FDTD when dealing with large systems that are composed of several smaller functional elements embedded in an overall periodic environment. Complementary comparisons with local density of photonic states and plain wave expansion methods are presented as well [3].
[1] J. Phys.: Condens. Matter 15, R1233 (2003)
[2] Opt. Lett. 28, 619 (2003)
[3] Appl. Phys. Lett. 84, 4687 (2004)