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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 326-329 |
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Jafari E, Mansouri-Birjandi M A, Tavousi A. Refractive index sensor based on metasurface at near-infrared region. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :326-329
URL: http://opsi.ir/article-1-2370-en.html
URL: http://opsi.ir/article-1-2370-en.html
1- Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, Iran
2- Faculty of Engineering, University of Velayat, Iranshahr, Iran
2- Faculty of Engineering, University of Velayat, Iranshahr, Iran
Abstract: (943 Views)
In this paper using finite difference time domain simulation, a highly sensitive H-shape subwavelength plasmonic metasurface is demonstrated for refractive index sensor at near-infrared wavelengths. The structure is made up of a silver layer with H-shape hole arrays on top of a thick TiN substrate separated from each other with glass dielectric spacers. The TiN film prevents light transmission from the resonator and that makes the transmission almost zero. The simulation results show a high sensitivity up to 814 nm/RIU with a figure of merit of 4.66, which is comparable to previous metasurface sensors and even outperforms some of them.
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