Xiaochuang Xu

Fudan University, Shanghai, Shanghai Shi, China

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Publications (3)7.4 Total impact

  • Xiaochuang Xu · Fengqin Wu · Dezhuan Han · Xiaohan Liu · Jian Zi
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    ABSTRACT: The photonic band structures of one-dimensional photonic crystals (1D PCs) with three layers in a period are studied theoretically. Our results show that complete photonic bandgaps (PBGs) for all polarizations can be obtained in these 1D PCs made of a conventional dielectric material, a negative-permittivity and a negative-permeability metamaterial. The origin of the complete PBGs lies in the existence of surface waves for all polarizations.
    Journal of Physics Condensed Matter 05/2008; 20(25):255241. DOI:10.1088/0953-8984/20/25/255241 · 2.35 Impact Factor
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    ABSTRACT: The properties of photonic quantum-well structures containing negative-index materials are studied theoretically, showing features remarkably better than conventional photonic quantum-well structures. Owning to the zero- gap of one-dimensional photonic crystals containing negative-index materials, the photonic quantum-well structures can be proposed as a multiple channeled filter which is very weak dependent on incident angle and polarization, and insensitive to the thickness disorder of the barrier photonic crystals.
    Optics Communications 12/2007; DOI:10.1016/j.optcom.2007.07.041 · 1.54 Impact Factor
  • Xiaochuang Xu · Yonggang Xi · Dezhuan Han · Xiaohan Liu · Jian Zi · Ziqiang Zhu
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    ABSTRACT: Photonic band structures of one-dimensional (1D) metallic-dielectric photonic crystals (MDPCs) are studied theoretically. We show that a 1D MDPC can be considered as an effective metallic medium with a well-defined effective plasma frequency. This effective plasma frequency is found to be inversely proportional to the optical thickness of the dielectric layer and is independent of either the constituent metal or the thickness of the metallic layer. By increasing the optical thickness of the dielectric layer, the effective plasma frequency of a 1D MDPC can be depressed into extremely low frequencies such as far infrared or even below.
    Applied Physics Letters 02/2005; 86(9):091112-091112-3. DOI:10.1063/1.1879101 · 3.52 Impact Factor