1. Laboratory of Information Functional Materials and Devices
2. School of Science
3. Beijing University of Posts and Telecommunications
4. Beijing 100876
5. China
6. State Key Laboratory of Information Photonics and Optical Communications
7. Center for Optoelectronics Materials and Devices & Key Laboratory of Optical Field Manipulation of Zhejiang Province
8. Department of Physics
9. Zhejiang Sci-Tech University
10. The State University of New York at Potsdam
11. Potsdam
12. USA