Efficient Complex Envelope ADI-FDTD Method for the Analysis of Anisotropic Photonic Crystals

被引：8
|
作者：
Singh, Gurpreet [1 ]
Tan, Eng Leong [1 ]
Chen, Zhi Ning [2 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
[2] Inst Infocomm Res, Singapore 138632, Singapore
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 12期
关键词：
Finite-difference time-domain (FDTD) methods; photonic crystals (PhCs);
D O I：
10.1109/LPT.2011.2138123
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：
This letter presents a new efficient formulation of the recently proposed complex envelope alternating direction implicit finite-difference time-domain (CE-ADI-FDTD) method for anisotropic photonic crystal (PhC) analysis. The proposed CE-ADI-FDTD method is based on a concise formulation that is more efficient and simpler to implement compared to the conventional method. The concise formulation includes perfectly matched layer (PML) boundary conditions and caters for nonuniform grid discretization. The efficiency of the proposed CE-ADI-FDTD method is validated through a numerical study of the field enhancement effect in a finite sized PhC composed of periodic cells of misaligned anisotropic dielectric layers with split band edge (SBE) on the band diagram. In the numerical study, we further illustrate that by properly tuning the orientation angles of the anisotropy axes of the SBE PhC layers, the field enhancement effect can be optimized for an incident wave polarization.
引用
收藏
页码：801 / 803
页数：3
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