摘要
利用传输矩阵法研究了对称结构和非对称结构一维光子晶体微谐振腔的调谐特性和品质因子.研究发现:当缺陷层光学厚度增加时,缺陷模中心波长也会随着增加即向长波方向移动,微谐振腔的调谐特性与缺陷层两边介质的折射率有关;相比于对称结构,非对称结构能在较小的缺陷层光学厚度变化范围内实现较大波长范围的线性调谐;品质因子随缺陷层厚度的增加先增大后减小,在缺陷模中心波长为λ0时可达最大值;高低折射率介质层的排布对微谐振腔品质因子有影响.
The tuning characteristics and quality factor of one-dimension photonic crystal micro-cavity with symmetrical structure and unsymmetrical structure with transfer matrix method were researched. Results show that with the increase of optical thickness of defect layer,the center wavelength of defect mode will increase and tuning characteristics of micro-cavity relate to the refractive index of medium which surround the defect layer. Compared with symmetrical structure, unsymmetrical structure can achieve linear tuning with wide wavelength range but smaller variation of the optical thickness of defect layer. Quality factor will increase first and then reduce with increase the thickness of the defect layer and it has maximum when the center wavelength of defect mode is λ0. The array of medium with high or low refractive index affects the quality factor of micro-cavity.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2009年第2期285-288,共4页
Acta Photonica Sinica
基金
吉林省科技发展计划(20050524)
长春市国际合作科技计划(2007114)资助
关键词
光子晶体
微谐振腔
缺陷模
调谐特性
品质因子
Photonic crystal
Micro-cavity
Defect mode
Tuning characteristics
Quality factor
