论文部分内容阅读
采用时域有限差分(FDTD)方法研究了二维六边形排列结构的光子晶体近零折射率材料的相位特性,提出利用电场相位的空间频谱计算等效折射率的新方法,该方法可直观地反映电场相位的变化,解释了负折射的传播机理。利用该方法分析了横磁(TM)模波长和温度对等效折射率的影响。
The phase characteristics of near-zero refractive index materials of photonic crystals in a two-dimensional hexagonal arrangement are studied by using the FDTD method. A new method of calculating the equivalent refractive index using the spatial spectrum of the electric field phase is proposed. The proposed method can be intuitive Reflects the change of the electric field phase, explains the transmission mechanism of negative refraction. The influence of transverse magnetic (TM) mode wavelength and temperature on the equivalent refractive index was analyzed by this method.