Band gap optimization of finite photonic structures using apodization method
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Band gap optimization of finite photonic structures using apodization method
- 发表刊物：
- JOURNAL OF APPLIED PHYSICS
- 摘要：
- In this paper, the photonic band diagram and the density of states in finite photonic structures are
analyzed and optimized for broad bandwidths using the apodization method. Based on the effective
propagation constant, the group refractive index can be computed for the finite structures, which is
adopted to reveal the physical explanation on the optimal band gaps. The surface states of the finite
photonic crystal and the mode matching at the interfaces are also considered. It is found that the high
group index of the photonic structures can obtain broad bandwidths and also enhance the mode
matching at the interfaces. By slowly varying the radii of the cylinders monotonously in two
dimensions, the first band gap can be increased from 10.6% to 20.04%. This work provides a useful
tool for the optimal design of finite photonic crystals.
- 合写作者：
- Jiu Hui Wu, A. Q. Liu, and L. K. Ang
- 卷号：
- 100
- 页面范围：
- 084309
- 是否译文：
- 否
- 发表时间：
- 2006-10-18