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Authors: B. Maes, J. Petracek, S. Burger, P. Kwiecien, J. Luksch, I. Richter
Title: Simulations of high-Q optical nanocavities with a gradual 1D bandgap
Format: International Journal
Publication date: 3/2013
Journal/Conference/Book: Optics Express
Editor/Publisher: OSA, 
Volume(Issue): 21(6) p.6794
DOI: 10.1364/oe.21.006794
Citations: 33 (Dimensions.ai - last update: 26/6/2022)
31 (OpenCitations - last update: 10/5/2022)
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Abstract

High-quality cavities in hybrid material systems have various interesting applications. We perform a comprehensive modeling comparison on such a design, where confinement in the III-V material is provided by
gradual photonic crystal tuning, a recently proposed method offering strong resonances. The III-V cavity couples to an underlying silicon waveguide. We report on the device properties using four simulation methods:
finite-difference time-domain (FDTD), finite-element method (FEM), bidirectional eigenmode propagation (BEP) and aperiodic rigorous coupled wave analysis (aRCWA). We explain the major confinement and coupling
effects, consistent with the simulation results. E.g. for strong waveguide coupling, we find quantitative discrepancies between the methods, which establishes the proposed high-index-contrast, lossy, 3D structure as a challenging modeling benchmark.

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