Tunable two-dimensional photonic crystal cavity all-optical switching infiltrated with liquid-crystal

被引：1

作者：

Zhou Jian-Wei ^{[1
,2
]}

Liang Jing-Qiu ^{[1
]}

Liang Zhong-Zhu ^{[1
]}

Tian Chao ^{[1
,2
]}

Qin Yu-Xin ^{[1
]}

Wang Wei-Biao ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun 130033, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

ACTA PHYSICA SINICA | 2013年 / 62卷 / 13期

基金：

中国国家自然科学基金;

关键词：

two-dimensional photonic crystal cavity; waveguide; finite difference time domain (FDTD) method; liquid crystals; WAVE-GUIDES; ALIGNMENT;

D O I：

10.7498/aps.62.134208

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel photonic crystal (PC) all-optical switch based on the shift of defect mode is demonstrated. Two photonic crystal waveguides are connected by a photonic crystal cavity. The point defect of the photonic crystal cavity is filled with phenylacetylene liquid cyrstals intermingled with azobenzene. The output of the optical switch is controlled by adjusting the rotation angle of the liquid crystals' orientation vector. And the optical switch is numerically investigated by using the finite difference time domain (FDTD) method and plane wave expansion method. Numerical simulation shows that the optical switch based on the PC cavity can be changed by adjusting the applied linearly polarized light. Results show that the switch has low threshold power density, great extinction ratio, and small size.

引用

页数：6

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[3]

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