中国物理B ›› 2008, Vol. 17 ›› Issue (7): 2544-2552.doi: 10.1088/1674-1056/17/7/034
• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇 下一篇
郭继勇, 陈鸿, 李宏强, 张冶文
Guo Ji-Yong(郭继勇), Chen Hong(陈鸿)†, Li Hong-Qiang(李宏强), and Zhang Ye-Wen(张冶文)
摘要: We take a finite dielectric photonic crystal as a homogeneous slab and have extracted the effective parameters. Our systematic study shows that the effective permittivity or permeability of dielectric photonic crystal is negative within a band gap region. This means that the band gap might act as $\varepsilon$-negative materials (ENMs) with $\varepsilon <0$ and $\mu >0$, or $\mu$-negative materials (MNMs) with $\varepsilon >0$ and $\mu <0$. Moreover the effective parameters sensitively rely on size, surface termination, symmetry, etc. The effective parameters can be used to design full transmission tunnelling modes and amplify evanescent wave. Several cases are studied and the results show that dielectric photonic band gap can indeed mimic a single negative material (ENM or MNM) under some restrictions.
中图分类号: (Permittivity (dielectric function))