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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Band structures of one-dimensional subwavelength photonic crystals containing metamaterials
Yi Weng1, Zhi-Guo Wang, Hong Chen
1Pohl Institute of Solid State Physics, Tongji University, Shanghai 20092, China.
Abstract:
We study the band structures of one-dimensional (1D) photonic crystals (PCs) in the subwavelength limit. A "spatial-averaged single-negative" (SASN) gap whose edges correspond to zero (volume) averaged permittivity (epsilon=0) and zero (volume) averaged permeability (micro=0) will appear when metamaterial is included in the PC. Unlike the Bragg gap, the frequency range of the SASN gap is invariant to the geometrical scaling and insensitive to the incident angle and disorder. In the subwavelength limit, both the zero-n gap in the left-handed 1D PC and the zero-effective-phase gap in the single-negative 1D PC can be understood as SASN gaps. When the subwavelength condition is not fulfilled, the zero-n gap and zero-effective-phase gap begin to act differently.
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