Research of optical properties of one-dimension photonic crystals constructed by positive-negative refractive materials
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摘要: 为了得到新的传输性质,把具有负介电常数和磁导率的负折射率材料引入到光子晶体当中,运用Maxwell电磁波方程和Bloch理论得到的含正负折射率材料的色散关系的解析式,分别分析一维无限周期且正折射率材料和负折射率材料交替组成的一维光子晶体的禁带结构和色散特性,并与常规的正折射率材料的光子晶体比较,发现含正、负折射率材料且呈周期性重复的双层结构的复合光子晶体其光子具有较宽禁带,为设计超宽禁带的光子带隙结构提供了一定的理论可能性。Abstract: Photonic crystals were the new artificial complex media during the last decades,however its transmission property might change a lot if new material with negative refraction index are inserted.The main properties of the band gap and dispersion structure of the one-dimensional photonic crystal,whose each period consisting of one layer of a usual material and one layer of negative refractive material,are studied based on Maxwell equation and Bloch theory.Our analysis results show it possible to make the band gap of the periodically-layered photonic crystals wider than the usual material,which offers a possibility to design photonic band gap structure with wide stop bands.
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Keywords:
- materials /
- one-dimensional photonic crystal /
- negative refractive material /
- Bloch wave /
- band gap
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