RCWA/aRCWA - An efficient and diligent workhorse for nanophotonic/nanoplasmonic simulations - Can it work even better?

0473284 - ÚFE 2017 RIV US eng C - Conference Paper (international conference)
Kwiecien, P. - Richter, I. - Čtyroký, Jiří
RCWA/aRCWA - An efficient and diligent workhorse for nanophotonic/nanoplasmonic simulations - Can it work even better?
17th International Conference on Transparent Optical Networks (ICTON 2015). New York: IEEE, 2015 - (Jaworski, M.), č. článku We.B4.3. ISBN 978-1-4673-7880-2. ISSN 2162-7339.
[International Conference on Transparent Optical Networks (ICTON 2015) /17./. Budapest (HU), 05.07.2015-09.07.2015]
R&D Projects: GA ČR(CZ) GBP205/12/G118
Institutional support: RVO:67985882
Keywords : Fourier factorization * Plasmonic structure * Adaptive spatial resolution
Subject RIV: BH - Optics, Masers, Lasers

In this contribution, fundamentals of both periodic rigorous coupled wave analysis (RCWA) technique as well as aperiodic (aRCWA) techniques will be reviewed, starting with standard algorithms and following with their important as well as alternative extensions and ingredients. Although today, these methods are also often called Fourier modal methods (FMM), we would prefer here their original name stemming from the diffraction grating analysis. The importance of these frequency-domain rigorous techniques has been even increased, as a plethora of novel designs of nanophotonic and nanoplasmonic structures is increasingly growing, not only bringing new physics into life, but also attracting photonics devices applications. As had been demonstrated, the original periodic RCWA method has become applicable also to modeling isolated structures, as photonic waveguides and cavities; these isolated objects being considered as a single period of "supergrating", with a proper separation of neighboring "superperiods" in contrast to coupling in standard periodic structures. The extensions and ingredients primarily include, mostly, e.g. various correct (or fast) Fourier factorization schemes, adaptive spatial resolution techniques, symmetry considerations, incorporation of general fully anisotropic materials, as well as various variants of boundary conditions and correct field calculation procedures. Finally, several alternative approaches / modifications to several critical parts within the algorithm, which can improve the algorithm performance, in terms of time efficiency and / or computational requirements, will be presented. In previous couple of years, we have developed in-house 2D and 3D numerical tools based on RCWA / aRCWA methods for the analysis of nanophotonic and nanoplasmonic structures and systems.
Permanent Link: http://hdl.handle.net/11104/0270441