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Asymmetric transmission or optical-diode behavior have very important applications in information technology, such as directionally-sensitive beam splitting, multiplexing, and optical interconnection. Here, we propose an all-dielectric chiral metamaterial to realize asymmetric wave transmission in far-infrared band. Made of Si-based double L-shaped resonators on both sides of SiO2 substrate, the three-layered...
Magnetic tunable left-handed material composed of ferrite-dielectric and metallic mesh is proposed and verified. We discuss the variation of electromagnetic parameters due to the change of three flexible geometry parameters: the lattice constant, the line width of the mesh, and the thickness of dielectric. The mesh affects the permittivity but does not affect the frequency range of negative permeability,...
In this paper, we will review some works on negative index metamaterials in magnetic composites, basically based on our recent works. First, we explore the condition of the existence of negative index meta-materials made of magnetic materials. We will point out that the left-handed materials in the magnetic materials are closely related to the wave polarization and magnetic damping. Then, the layer...
We introduce a new numerical method, based on plane-wave expansion method, to calculate the band structures of 2-dimensional periodic structures made of dispersive medium. As an example, we calculated band diagram of magnetic photonic crystals with dispersive permeability by the method. The results are the same as the other methods, but our method is highly convergent so saves a lot of running time...
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