MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells

High-contrast gratings (HCG) are ultra-thin elements operating in sub-wavelength regime with the period of the grating smaller than the wavelength and with the high-index grating material fully surrounded by low-index material. Design of MEMS mirrors made from HCG with specific reflectivity response...

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Main Author: Milan Maksimović
Format: Article
Language:English
Published: University of Banja Luka 2015-12-01
Series:Electronics
Subjects:
Online Access:http://electronics.etfbl.net/journal/Vol19No2/xPaper_03.pdf
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author Milan Maksimović
author_facet Milan Maksimović
author_sort Milan Maksimović
collection DOAJ
description High-contrast gratings (HCG) are ultra-thin elements operating in sub-wavelength regime with the period of the grating smaller than the wavelength and with the high-index grating material fully surrounded by low-index material. Design of MEMS mirrors made from HCG with specific reflectivity response is of great practical interest in integrated optoelectronics. We theoretically investigate design of the spectral response for HCGs with the complex unit cells. We show that the spectral response can be tailored via the unit cell perturbations and with the asymmetric unit cell perturbations may introduce completely new spectral response. 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.
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spelling doaj.art-7b8841ddd4ea421baa97f016b8201b362022-12-22T03:09:22ZengUniversity of Banja LukaElectronics1450-58432015-12-01192525810.7251/ELS1519052MMEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cellsMilan Maksimović0Focal-Vision and OpticsHigh-contrast gratings (HCG) are ultra-thin elements operating in sub-wavelength regime with the period of the grating smaller than the wavelength and with the high-index grating material fully surrounded by low-index material. Design of MEMS mirrors made from HCG with specific reflectivity response is of great practical interest in integrated optoelectronics. We theoretically investigate design of the spectral response for HCGs with the complex unit cells. We show that the spectral response can be tailored via the unit cell perturbations and with the asymmetric unit cell perturbations may introduce completely new spectral response. 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.http://electronics.etfbl.net/journal/Vol19No2/xPaper_03.pdfHigh index contrastsubwavelength gratingMEMSoptical phased array
spellingShingle Milan Maksimović
MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
Electronics
High index contrast
subwavelength grating
MEMS
optical phased array
title MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
title_full MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
title_fullStr MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
title_full_unstemmed MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
title_short MEMS mirrors using sub-wavelength High-Contrast-Gratings with asymmetric unit cells
title_sort mems mirrors using sub wavelength high contrast gratings with asymmetric unit cells
topic High index contrast
subwavelength grating
MEMS
optical phased array
url http://electronics.etfbl.net/journal/Vol19No2/xPaper_03.pdf
work_keys_str_mv AT milanmaksimovic memsmirrorsusingsubwavelengthhighcontrastgratingswithasymmetricunitcells