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Proceedings Paper

Study of local dispersion in photonic crystal waveguide interfaces and hetero-structures
Author(s): Babak Dastmalchi; Reza Kheradmand; Mohammad R. A. Monazam; Abouzar Hamidipour; Abbas Mohtashami; Kurt Hingerl; Javad Zarbakhsh
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Paper Abstract

We have recently introduced a novel method to calculate local dispersion relation based on the Finite-Difference Time-domain and filter diagonalization method, which is suitable for local study of dispersion in optical waveguide, especially for the cases of non-periodic, curvilinear, and finite waveguides. In this paper, this approach is applied to study the photonic crystal waveguides at interfaces and double hetero-structure waveguides. We also studied the stretching effect, which is increasing the lateral distance between neighboring rods along guiding direction on band gap. Hybrid modes at interface are results of superposition of existing modes in adjacent waveguides. The results present a clear picture of localization mechanism of cavity modes and the transmission in the double-hetero-structures.

Paper Details

Date Published: 6 May 2008
PDF: 11 pages
Proc. SPIE 6989, Photonic Crystal Materials and Devices VIII, 698905 (6 May 2008); doi: 10.1117/12.780871
Show Author Affiliations
Babak Dastmalchi, Johannes Kepler Univ. Linz (Austria)
Reza Kheradmand, Univ. of Tabriz (Iran)
Mohammad R. A. Monazam, Univ. of Tabriz (Iran)
Abouzar Hamidipour, Sahand Univ. of Technology (Iran)
Abbas Mohtashami, Johannes Kepler Univ. Linz (Austria)
Kurt Hingerl, Johannes Kepler Univ. Linz (Austria)
Javad Zarbakhsh, Johannes Kepler Univ. Linz (Austria)
Kompetenzzentrum Automobil- und Industrie-Elektronik GmbH (Austria)

Published in SPIE Proceedings Vol. 6989:
Photonic Crystal Materials and Devices VIII
Richard M. De La Rue; Ceferino López; Michele Midrio; Pierre Viktorovitch, Editor(s)

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