题目：

Few-Layer Topological Insulator for All-Optical Signal Processing Using the Nonlinear Kerr Effect

作者：

Shuqing Chen¹, Lili Miao², Xing Chen², Yu Chen¹, Chujun Zhao², Subhadeep Datta¹, Ying Li¹*, Qiaoliang Bao³, Han Zhang¹*, Yong Liu⁴, Shuangchun Wen², and Dianyuan Fan¹

单位：

¹SZU-NUS Collaborative Innovation Centre for Optoelectronic Science and Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen University, Shenzhen 518060 , China

²Key Laboratory for Micro�Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082 , China

³Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123 , China

⁴State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Information University of Electronic Science and Technology of China (UESTC), Chengdu 610054 , China

摘要：

Topological insulators (TIs) are a new quantum phase of matter with topologically protected surface metallic states inside the insulating bulk states. Due to their unique single Dirac cone surface state, relatively low sheet resistance, and broadband optical operation, they have attracted enormous interests in both electronics and optics. Out of those above-mentioned applications, electronic devices are seeking most attention until now. Here the experimental prototype for light processing device, TI-coated microfiber (TCM), is demonstrated. Owing to the large Kerr coefficient of TI, TCM could operate as an effective optical Kerr switcher and broadband wavelength converter at the telecommunication band. This device could be well integrated with current high-speed fiber optic communication networks and might well provide an approach for all-optical signal processing through nonlinear processes. It is anticipated that few-layer topological insulator might afford new opportunities for nonlinear photonic applications, especially in all-optical routing, optical multiplication frequency, etc.

影响因子：

4.062

分区情况：

2区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/adom.201500347/full

(责任编辑：杨阳，联系方式：yangyangcnst@suda.edu.cn)