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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Format: | Article |
Language: | English |
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University of Banja Luka
2015-12-01
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Series: | Electronics |
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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. |
first_indexed | 2024-04-13T01:05:36Z |
format | Article |
id | doaj.art-7b8841ddd4ea421baa97f016b8201b36 |
institution | Directory Open Access Journal |
issn | 1450-5843 |
language | English |
last_indexed | 2024-04-13T01:05:36Z |
publishDate | 2015-12-01 |
publisher | University of Banja Luka |
record_format | Article |
series | Electronics |
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 |