Work

Simulations of high-Q optical nanocavities with a gradual 1D bandgap

Year: 2013

Type: article

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.

Source: Optics Express

DOI: 10.1364/oe.21.006794

Authors: Bjorn Maes, Jiří Petráček, Sven Burger, Pavel Kwiecien, Jaroslav Luksch, Ivan Richter

Institutions: University of Mons, Brno University of Technology, Zuse Institute Berlin, Czech Technical University in Prague

Language: English

Topic: Photonic Crystals and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Grantová Agentura České Republiky