کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1816263 1525260 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal parameter relations to realize high-power transmission in planar waveguide filled with lossy left-handed material
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Optimal parameter relations to realize high-power transmission in planar waveguide filled with lossy left-handed material
چکیده انگلیسی
In a planar waveguide filled with two-layered equal-thickness media, in which one is air and the other is a lossy left-handed medium (LHM) with the relative permittivity εr1=-(1+δ)+iγε and permeability μr1=-1/(1+δ)+iγμ, we show rigorously that extremely high power densities can be generated and transmitted along the waveguide. In such a lossy super waveguide, the poles in the relevant integrals are complex, whose real parts represent the wavenumbers of guided modes propagating along the waveguide and imaginary parts denote the attenuations of guided modes. We find that optimal values of the retardation parameter δ exist once the loss in LHM is given to make the transmitted power be maximum. Compared with the conventional air-filled waveguide, at an observation point 10 wavelengths away from the source, the transmitted power density in the lossy super waveguide can be 10 000 times larger even when the loss is as high as 10-4 and the retardation is as large as -0.0085.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 392, Issues 1–2, 15 April 2007, Pages 298-303
نویسندگان
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