کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7925683 1512509 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A tunable Fabry-Perot filter (λ/18) based on all-dielectric metamaterials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
A tunable Fabry-Perot filter (λ/18) based on all-dielectric metamaterials
چکیده انگلیسی
A tunable Fabry-Perot filter composed of two separated all-dielectric metamaterials is proposed and numerically investigated. Different from metallic metamaterials reflectors, the all-dielectric metamaterials are constructed by high-permittivity TiO2 cylinder arrays and exhibit high reflection in a broadband of 2.49-3.08 THz. The high reflection is attributed to the first and second Mie resonances, by which the all-dielectric metamaterials can serve as reflectors in the Fabry-Perot filter. Both the results from phase analysis method and CST simulations reveal that the resonant frequency of the as-proposed filter appears at 2.78 THz, responding to a cavity with λ/18 wavelength thickness. Particularly, the resonant frequency can be adjusted by changing the cavity thickness. This work provides a feasible approach to design low-loss terahertz filters with a thin air cavity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 414, 1 May 2018, Pages 160-165
نویسندگان
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