کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1493679 1510787 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and numerical study of a broad pass-band low-loss optical metamaterials filter
ترجمه فارسی عنوان
مطالعه آزمایشی و عددی فیلتر متمرکز نوری با ضریب کاهش ضریب اطمینان بالا
کلمات کلیدی
160.3918، 160.4236، 260.1180، 260.3910، 160.5298 مواد فلزی، پاس باند، پلاسمون سطح محلی فیلتر کردن امپدانس همسان
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی


• A broad pass-band can be achieved over 96% transmittance across the 90.0–105.0 THz.
• The well-matched impedance to free space across leads to the ass-band.
• A nearly constant effective impedance was observed with a small variation of 3.8%.
• The fabricated metamaterial filter can be modulated from a double negative material to a normal material throughout the pass-band.
• The pass-band is expanded with w2 increasing or h1 reducing.

We present the simulation, and fabrication of an optical metamaterial filter. It consists of two silver layers and one SU-8 layer perforated with periodic sub-wavelength holes arrays which are prepared by optical lithography. Measured results indicate that a broad pass-band with over 96% transmittance across 90.0–105.0 THz frequency range can be obtained. Effective permeability, permittivity, and impedance are retrieved by applying S parameter retrieval method. These retrieved effective parameters show that the fabricated metamaterial filter can be modulated from a double negative material to a normal material in pass-band. Real parts of effective permeability and permittivity follow a similar slope results in well-matched impedance to free space, which leads to the broad pass-band. Furthermore, effects of nano-hole sidewall length (w2) and thickness of dielectric layer (h1) are experimental surveyed. The pass-band is expanded with w2 increasing or h1 reducing due to the reduced of strength of electromagnetic resonance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 47, September 2015, Pages 62–66
نویسندگان
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