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year 28, Issue 2 (ICOP & ICPET 2022 2022)
ICOP & ICPET _ INPC _ ICOFS 2022, 28(2): 657-660 |
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Moshtaghifard F, Askari A, Rahiminejad L. A near infrared refractive index sensor based on double-step all-metal grating. ICOP & ICPET _ INPC _ ICOFS 2022; 28 (2) :657-660
URL: http://opsi.ir/article-1-2676-en.html
URL: http://opsi.ir/article-1-2676-en.html
Abstract: (721 Views)
In recent years, surface plasmonic-based sensors have received a great deal of attention due to their high sensitivity and ability to integrate into dimensions smaller than the wavelength. In this paper, a refractive index sensor based on an all-metal grating with a simple structure is proposed and investigated. For the proposed structure, plasmonic absorption occurs in the visible and near-infrared wavelength region. In addition to a parameter such as period, another factor such as the grating surface profile also affects the absorption spectrum properties; Finite element simulations show that with a small and appropriate change in the profile of a typical grating, the value of the figure of merit can be greatly increased.
Type of Study: Experimental |
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