Fast calculation of cavity-mode characteristics of photonic crystal cavities

被引：11
|
作者：
Qiang, Zexuan [1 ]
Zhou, Weidong
机构：
[1] Univ Texas, Dept Elect Engn, Nanofab Ctr, Arlington, TX 75019 USA
[2] Nanjing Univ, Inst Opt Commun Engn, Nanjing 210093, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2006年 / 18卷 / 17-20期
关键词：
cavity quality factor; defect-mode cavity; effective index method (EIM); effective index perturbation (EIP); photonic crystal slabs (PCSs);
D O I：
10.1109/LPT.2006.882289
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fast approach based on effective index perturbation method is proposed to evaluate the intrinsic characteristics of photonic-crystal-slab-based microcavity with two-dimensional finite-difference time-domain (2-D FDTD) technique. For two widely used single defect structures, less than 2% computational error was obtained in calculating the defect mode frequencies. Accurate prediction of cavity modal properties and resonant peak frequencies is feasible based on 2-D FDTD simulation by adjusting the effective index to match the dielectric band edge for donor-like defect mode. The correlation between the modified effective index and the cavity (lasing) mode with the highest quality factor Q offers an efficient tool in the design of defect mode based photonic crystal microcavities.
引用
收藏
页码：1940 / 1942
页数：3
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