کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8203163 1530509 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On transmittance and localization of the electromagnetic wave in two-dimensional graphene-based photonic crystals
ترجمه فارسی عنوان
در انتقال و محلی سازی موج الکترومغناطیسی در بلورهای فوتونیک مبتنی بر گرافن دو بعدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
چکیده انگلیسی
Two-dimensional graphene-based photonic crystal (GPC) formed by a periodic array of the homogeneous dielectric cylinders etched in the alternating graphene and dielectric layers and its inverse counterpart are considered. The transmittance of the photonic crystal is obtained. The waveguide due to the localization of the electromagnetic wave on the lattice defect that breaks the translational symmetry of the GPC of two different topologies is studied. The different topologies of GPC are characterized by different photonic band structures with different widths of photonic band gaps (PBG) and provide different frequencies for the localized electromagnetic wave due to the defect. The frequencies of the localized mode for both type of the GPC, located inside the lowest PBG, are in the range of THz or tens of THz depending on the topology of the GPC. It is shown that the photonic band gap always can be tuned by changing the chemical potential of graphene to provide formation of the localized photonic mode due to the defect. The technological advantages of the GPC, as well as the opportunity to tune the PBG and the frequency of the localized electromagnetic wave in the terahertz region of spectrum for the GPC are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 382, Issue 31, 10 August 2018, Pages 2075-2080
نویسندگان
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