摘要
运用光学传输矩阵理论,研究了含负折射率材料一维三元光子晶体的禁带特性和局域模特性,发现了一种新型全方位光子带隙。与传统的Bragg带隙相比,这种新型全方位光子带隙的中心频率和带宽对入射角的变化不敏感。引入缺陷后,全方位光子带隙中出现缺陷模,它的位置对入射角不敏感,而且当各层介质厚度做一定比例的缩放时也几乎保持不变。
The bandgap properties and localized defect mode of one-dimensional ternary photonic crystals with negative-index materials are investigated by optical transfer matrix method. The results show that a new type of omnidirectional gaps is found. In contrast to the Bragg gaps, the properties （the central frequency and width of the gap） of such omnidirectional gaps are insensitive to the incident angles. When a defect layer is introduced, a defect mode appears inside the omnidirectional gap, and the spectral position of the defect mode is almost independent of incident angles and nearly invariant with the scaling.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2006年第5期587-590,共4页
Journal of Optoelectronics·Laser
基金
教育部南开大学
天津大学科技合作基金项目
关键词
光子晶体
负折射率
全方位光子带隙
缺陷模
photonic crysal
negative refractive index
omnidirectional gap
defect mode
