单负材料光子晶体微腔的光学双稳态  

Study of Optical Bistability of Photonic Crystal Microcavity Composed of Single Negative Materials

作　　者：李淑娟[1] 王光[1] 杨烨[1] 陈宪锋[1] 

机构地区：[1]常州大学数理学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2012年第2期79-82,共4页Journal of Changzhou University：Natural Science Edition

摘　　要：在由2种单负材料构成的周期性结构中,存在着一个与晶格常数、偏振态等无关的全向反射带。如果周期结构中存在缺陷,在禁带中就会出现品质因子较高的局域模。研究了缺陷层厚度对局域模的影响,以及局域模的空间电场分布。当缺陷层为非线性的Kerr介质时,研究了不同结构参数和微腔类型的系统光学双稳态。引入频率调制量δ后,系统的光学双稳态主要由δ和结构参数来决定,与微腔结构类型无关。产生双稳态现象的频率调制量的临界值为0.866。In the periodic structure that consists of two kinds of single negative materials, there is an omnidirectional reflectivity that has nothing to do with the lattice parameter and polarization state. If there is a defect in the periodic structure, the localized mode with higher quality factor will appear in the bandgap. The effects of the thickness of the defect layers on the localized mode and its electric field distribution of the localized mode are studied. If the defect layer is nonlinear Kerr medium, the optical bisability is deduced. After introducing a frequency modulation value 8, the optical hisability depends on the 8 and structure parameters, not on the kinds of microcavity structure. The critical value of the frequency modulation to produce the bistability is 0. 866.

关 键 词：光子晶体 单负材料 光学双稳态 局域模 

分 类 号：O437[机械工程—光学工程]