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利用微腔之间的立体耦合,提出了基于无源材料硅的双层光子晶体薄板H1(DLPCS-H1)腔,薄板之间为空气层.使用三维时域有限差分方法和Padé近似方法分析了DLPCS-H1腔的偶极模的场分布和品质因子.通过对中间空气层高度的优化使DLPCS-H1腔的偶极模的品质因子得到了显著的提高,大约为单层光子晶体薄板H1腔的偶极模的品质因子的4倍.此外,还研究了三层光子晶体薄板H1腔,它的偶极模的品质因子约为单层光子晶体薄板H1腔的偶极模的品质因子的7倍.
Based on the three-dimensional coupling between microcavities, a double-layer photonic crystal sheet H1 (DLPCS-H1) based on silicon as a passive material is proposed, and the air layer between the two sheets is presented as an air layer.Through three-dimensional finite difference time domain method and Padé’s approximation Field distribution and quality factor of dipole modes in DLPCS-H1 cavity The quality factor of the dipole mode in DLPCS-H1 cavity is significantly improved by the optimization of the height of the middle air layer, which is approximately the same as the H1 cavity of the monolayer photonic crystal plate Quadrupole of the dipole mode.Another work is also done on the H1 cavity of a three-layer photonic crystal plate whose quality factor of the dipole mode is about seven times the quality factor of the dipole mode of the H1 cavity of a single-layer photonic crystal plate Times