13 May 2013 Modeling and optimization of high index contrast gratings with aperiodic topologies
Author Affiliations +
Abstract
High-contrast gratings (HCG) are the ultra-thin elements set to operate in near-wavelength regime with the period of the grating smaller then wavelength and with the high-index grating fully surrounded by low-index material. We concentrate on topics scarcely explored in the literature such as the spectral response phenomenology of HCGs with the complex unit cells. We show that the spectral response is robust under the symmetric unit cell perturbations, while asymmetric unit cell perturbations may introduce completely new spectral response. Further, we show examples of highly fragmented spectra present in the case of HCGs with the aperiodic topology in the unit cell. Our results can serve as guidance for the design of the complex HCGs and help with the choice of the efficient initial grating topology prior to global optimization procedure.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Milan Maksimovic, "Modeling and optimization of high index contrast gratings with aperiodic topologies", Proc. SPIE 8789, Modeling Aspects in Optical Metrology IV, 87890L (13 May 2013); doi: 10.1117/12.2021018; https://doi.org/10.1117/12.2021018
PROCEEDINGS
12 PAGES


SHARE
Back to Top