设计了正方形和正六边形圆孔阵列组成的金属/电介质光子晶体(MDPhC)来研究阵列类型对其强透射特性的影响。采用微机电(MEMS)技术制作了两种具有相同结构参数的正方形和正六边形圆孔阵列组成的金/二氧化硅/硅光子晶体,利用傅里叶变换红外光谱仪测量其反射光谱。同时,也对这两种结构进行了时域有限差分法数值模拟。理论模拟和实验测量结果均表明,与正方形圆孔阵列相比,由正六边形圆孔阵列组成的MDPhC能够获得较强的光透射增强效果和较窄的透射峰。

Two kinds of metal/dielectric photonic crystals (MDPhC) combined with round hole arrays (square and hexagonal) are designed to investigate the effect of array type on extraordinary transmission characteristics for MDPhC. Two types of gold/silicon dioxide/silicon photonic crystal with the same structural parameters composed of square and hexagonal hole arrays were fabricated using MEMS technology,and their reflectance spectrums were measured using Fourier transform infrared spectrometer. At the same time,the numerical simulation was used for the two structures by finite difference time domain method. Compared with square round hole array,both the theoretical simulation results and the experimental results prove that MDPhC composed of hexagonal round hole array can obtain better effect of light transmission enhancement and narrower transmission peak.