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应用复平面波展开法对一维光子晶体的光子带隙,透射特性进行了分析.通过对色散关系和透射系数的数值计算发现一维光子晶体周期结构个数以及折射率分布对光学晶体透射系数以及光子带隙的影响.对于含有整数个周期结构的光子晶体有共振点出现在光子帯隙外的频率范围内,共振点的个数比周期结构个数少1.带隙倾斜斜率等于折射率的比值.折射率比值越大,带隙的范围越大.
The photonic bandgap and transmission properties of one-dimensional photonic crystals are analyzed by using the complex plane wave expansion method. By numerical calculation of the dispersion relation and the transmission coefficient, it is found that the number of periodic structures and the refractive index distribution of one- Photon bandgap effect.For a photonic crystal containing an integer number of periodic structures have resonance points appear in the photonic bandgap frequency range, the number of resonance points less than the number of periodic structure 1. Band gap tilt slope equal to the refractive index The larger the ratio of refractive index, the greater the range of bandgap.