High-Efficiency Bistable Switching Based on One-Dimensional Photonic Crystals with Single-Negative Materials
High-Efficiency Bistable Switching Based on One-Dimensional Photonic Crystals with Single-Negative Materials
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DOI：
10.1088/0256-307x/25/8/046
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发表时间：
2008-08
影响因子：
3.5
通讯作者：
Du Gui-qiang;Jiang Hai-Tao;Li Qiang;Zhang Yewen;Chen Hong
中科院分区：
文献类型：
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作者：
Du Gui-qiang;Jiang Hai-Tao;Li Qiang;Zhang Yewen;Chen Hong
从理论上研究了由两种单负材料（负磁导率和负磁导率）交替嵌入克尔型非线性缺陷层构成的一维光子晶体的非线性响应。在传统的PC中，很难实现具有低阈值和快速响应时间的双稳态切换。然而，在单负材料的PC中，通过改变两种类型的层的厚度的比例，随着结构尺寸的减小，开关响应时间缩短，阈值强度同时降低。
We study theoretically the nonlinear responses of one-dimensional photonic crystals (PCs) composed of alternating two kinds of single-negative (permittivity-negative and permeability-negative) materials embedded with a Kerr-type nonlinear defect layer. In conventional PCs, it is difficult to realize a bistable switching with both low threshold and quick response time. However, in PCs with single-negative materials, by changing the ratio of the thicknesses of the two types of layers, with the decreasing size of the structure, the switching response time is shortened and the threshold intensity decreases simultaneously.