Publication detail

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

MAES, B. PETRÁČEK, J. BURGER, S. KWIECIEN, P. LUKSCH, J. RICHTER, I.

Czech title

Simulace nanorezonátorů s vysokým činitelem kvality a proměnným jednorozměrným zakázaným pásem

English title

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

Type

journal article - other

Language

en

Original 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.

Czech abstract

Mikrorezonátory v hybridních materiálových systémech mají řadu zajímavých aplikací. Práce prezentuje numerickou srovnávací studii takového mikrorezonátoru, ve kterém je pole ohraničeno pomocí struktury s proměnným fotonickým zakázaným pásem. Vlastnosti rezonátoru jsou zkoumány pomocí čtyř rigorózních numerických metod. Jsou podrobně diskutovány fyzikální mechanizmy ovlivňující činitel kvality a rezonanční frekvenci. Výsledky také ukazují, že z hlediska simulací představuje použitá geometrie náročný numerický úkol.

English 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.

Keywords in English

Resonators, Photonic integrated circuits, Photonic crystals, Computational electromagnetic methods

RIV year

2013

Released

11.03.2013

ISSN

1094-4087

Volume

21

Number

6

Pages from–to

6794–6806

Pages count

13

BIBTEX


@article{BUT98881,
  author="Bjorn {Maes} and Jiří {Petráček} and Sven {Burger} and Pavel {Kwiecien} and Jaroslav {Luksch} and Ivan {Richter},
  title="Simulations of high-Q optical nanocavities with a gradual 1D bandgap",
  year="2013",
  volume="21",
  number="6",
  month="March",
  pages="6794--6806",
  issn="1094-4087"
}