1. School of Optical and Electronic Information
2. Huazhong University of Science and Technology
3. Wuhan City
4. P. R. China
5. School of Physics, Communication and Electronics
6. Department of Chemistry and Biochemistry
7. University of Maryland
8. College Park
9. USA
10. Department of Electrical Engineering and Computer Science
11. University of Michigan
12. Ann Arbor
13. Institute of Acoustics
14. Chinese Academy of Sciences
15. Beijing 100190