Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications
The transmittance of waves through one-dimensional periodic and Octonacci photonic structures was studied using the theoretical transfer matrix method for both wave-polarization-modes. The first structures were made up of the SiO<sub>2</sub> and TiO<sub>2</sub> materials. The...
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MDPI AG
2021-05-01
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author | Naim Ben Ali Youssef Trabelsi Haitham Alsaif Yasssine Bouazzi Mounir Kanzari |
author_facet | Naim Ben Ali Youssef Trabelsi Haitham Alsaif Yasssine Bouazzi Mounir Kanzari |
author_sort | Naim Ben Ali |
collection | DOAJ |
description | The transmittance of waves through one-dimensional periodic and Octonacci photonic structures was studied using the theoretical transfer matrix method for both wave-polarization-modes. The first structures were made up of the SiO<sub>2</sub> and TiO<sub>2</sub> materials. The objective here was to obtain a broad omnidirectional high reflector covering the infrared spectrum of a thermographic camera [1–14 µm] and, especially, to prevent the transmission of emitted human body peak radiation λ<sub>max</sub> = 9.341 µm. By comparing the periodic and Octonacci structures, we found that the last structure presented a main and wide photonic band gap near this human radiation. For that, we kept only the Octonacci structure for the rest of the study. The first structure did not give the aspired objective; thus, we replaced the TiO<sub>2</sub> layers with yttrium barium copper oxide material, and a significant enhancement of the omnidirectional photonic band gap was found for both TE and TM polarization modes. It was shown that the width of this band was sensitive to the Octonacci iteration number and the optical thickness (by changing the reference wavelength), but it was not affected by the ambient temperature. The number of layers and the thickness of the structure was optimized while improving the omnidirectional high reflector properties. |
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issn | 2304-6732 |
language | English |
last_indexed | 2024-03-10T11:15:28Z |
publishDate | 2021-05-01 |
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spelling | doaj.art-b8a1073ccecf406e9b7ab18a9a1174842023-11-21T20:29:52ZengMDPI AGPhotonics2304-67322021-05-018516910.3390/photonics8050169Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing ApplicationsNaim Ben Ali0Youssef Trabelsi1Haitham Alsaif2Yasssine Bouazzi3Mounir Kanzari4Department of Industrial Engineering, College of Engineering, University of Ha’il, Ha’il City 2440, Saudi ArabiaPhotovoltaic and Semiconductor Materials Laboratory, National Engineering School of Tunis, University of Tunis El Manar, Tunis 1002, TunisiaDepartment of Electrical Engineering, College of Engineering, University of Ha’il, Ha’il City 2440, Saudi ArabiaDepartment of Industrial Engineering, College of Engineering, University of Ha’il, Ha’il City 2440, Saudi ArabiaPhotovoltaic and Semiconductor Materials Laboratory, National Engineering School of Tunis, University of Tunis El Manar, Tunis 1002, TunisiaThe transmittance of waves through one-dimensional periodic and Octonacci photonic structures was studied using the theoretical transfer matrix method for both wave-polarization-modes. The first structures were made up of the SiO<sub>2</sub> and TiO<sub>2</sub> materials. The objective here was to obtain a broad omnidirectional high reflector covering the infrared spectrum of a thermographic camera [1–14 µm] and, especially, to prevent the transmission of emitted human body peak radiation λ<sub>max</sub> = 9.341 µm. By comparing the periodic and Octonacci structures, we found that the last structure presented a main and wide photonic band gap near this human radiation. For that, we kept only the Octonacci structure for the rest of the study. The first structure did not give the aspired objective; thus, we replaced the TiO<sub>2</sub> layers with yttrium barium copper oxide material, and a significant enhancement of the omnidirectional photonic band gap was found for both TE and TM polarization modes. It was shown that the width of this band was sensitive to the Octonacci iteration number and the optical thickness (by changing the reference wavelength), but it was not affected by the ambient temperature. The number of layers and the thickness of the structure was optimized while improving the omnidirectional high reflector properties.https://www.mdpi.com/2304-6732/8/5/169omnidirectionalhigh-reflectorOctonacciphotonicthermographicsensing |
spellingShingle | Naim Ben Ali Youssef Trabelsi Haitham Alsaif Yasssine Bouazzi Mounir Kanzari Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications Photonics omnidirectional high-reflector Octonacci photonic thermographic sensing |
title | Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications |
title_full | Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications |
title_fullStr | Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications |
title_full_unstemmed | Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications |
title_short | Optimized Omnidirectional High-Reflectance Using Octonacci Photonic Crystal for Thermographic Sensing Applications |
title_sort | optimized omnidirectional high reflectance using octonacci photonic crystal for thermographic sensing applications |
topic | omnidirectional high-reflector Octonacci photonic thermographic sensing |
url | https://www.mdpi.com/2304-6732/8/5/169 |
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