摘要
采用平面波展开法数值计算二维光子晶体在TE和TM偏振态下的带隙，给出了光子晶体中的禁带存在的理论依据，选择二维三角晶格光子晶体（GaAs）作为基底，在气孔内填充浓度为一定的待测溶液硫酸铜材料，计算温度为298K情况下介电常数在71．917～62．530变化时，光子晶体在不同偏振模式下的光子禁带结构，结果表明，以硫酸铜的水溶液作为空气圆孔中的介质材料，当溶液质量百分浓度不同时光子带隙（PBG）发生显著变化。
Plane wave expansion method was employed to simulate the band gap of two-dimensional triangular lattice photonic crystal made of a triangular lattice of dielectric rods in GaAs. The air hole was filled with copper sulfate materi- al and the corresponding relationship between dielectric constant of the copper sulfate and band structure were figured out when the change in dielectric constant of the copper sulfate at the temperature 298Ko The photonic band structure of photonic crystals infiltrated with copper sulphate in different polarization mode were obtained. The results show that the photonie band gap （PBG） changes with adjusting the concentration of the fructose solution used as the dielectric material in the air hole.
基金
国家自然科学基金项目（11164030）
关键词
光子晶体
平面波展开法
硫酸铜水溶液
光子带隙
photonic crystal
plane wave expansion method
copper sulphate solutions
photonic band structure
