Theoretical analysis of the modal behavior of 2D random photonic crystals

被引：1
|
作者：
Hamada, Shimpei [1 ]
Takeda, Seiji [1 ]
Viktorovitch, Pierre [2 ]
Obara, Minoru [1 ]
机构：
[1] Keio Univ, Sch Integrated Design Engn, Tokyo 108, Japan
[2] Inst Nanotechnol Lyon INL, UMR 5270, Lyon, France
来源：
PHOTONIC AND PHONONIC PROPERTIES OF ENGINEERED NANOSTRUCTURES II | 2012年 / 8269卷
关键词：
Photonic crystal; Bloch mode; Anderson localization; SLOW-LIGHT; LOCALIZATION; NANOCAVITY; DIFFUSION; LASERS;
D O I：
10.1117/12.906960
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：
We present the effect of structural randomness on the formation of Anderson localization (AL) in random photonic crystals (RPCs) by using a two-dimensional FDTD (Finite-Difference Time-Domain) computational method. The RPC consists of a silicon substrate with an array of air holes aligned in a triangular lattice shape. The structural randomness is introduced by randomly dislocating the positions of air holes. By investigating impulse response of the system, we obtained frequency spectra and Q-factors of long-lived modes. The modal characteristics of the modes as a function of structural randomness in RPCs and optimization of the structural randomness to achieve high photon confinement efficiency are achieved.
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页数：11
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