1. State Key Laboratory of Information Photonics and Optical Communications
2. Beijing University of Posts and Telecommunications
3. Beijing 100876
4. China
5. Department of NanoEngineering
6. State Key Laboratory of Functional Materials for Informatics
7. School of Science
8. School of Physics and Telecommunication Engineering
9. Shaanxi University of Technology(SNUT)
10. Hanzhong 723001
11. Beijing Computational Science Research Center
12. Beijing 100084
13. University of California San Diego
14. USA