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ICOP & ICPET 2019, 25 - ICOP & ICPET 2019: 349-352 Back to browse issues page
Design of Narrow band absorber as a plasmonic gas sensor
Fatemeh Salari *1, Maryam Pourmahyabadi1
1- Optoelectronic Laboratory,Faculty Of Electrical Engineering, Shahid Bahonar University of kerman
Abstract:   (251 Views)
In this paper, a narrowband plasmonic absorber based on a metal-dielectric-metal-dielectric-metal periodic structure is proposed and numerically investigated, which consists of aluminium nanobar periodic array on a thin aluminium film separated by a dielectric layer. The absorber works at near-infrared region and can be operated as a refractive index sensor with a high sensitivity of around 2300 nm/RIU, a narrow absorption bandwidth (FWHM) of 20nm and the absorption peak of 86 % at normal incidence. Thus, the FOM of the proposed plasmonic sensor can be reached 115RIU-1. By adjusting the structure parameters, the optimized absorption peak can be achieved.
Keywords: Gas sensor, Metamaterial structure, Plasmonic absorber, Refractive index
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Type of Study: Research | Subject: Special
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Salari F, Pourmahyabadi M. Design of Narrow band absorber as a plasmonic gas sensor . ICOP & ICPET. 2019; 25 :349-352
URL: http://opsi.ir/article-1-1816-en.html


Volume 25 - ICOP & ICPET 2019 Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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