1. Key Laboratory of Optoelectronic Technology & Systems
2. Education Ministry of China, Chongqing University and College of Optoelectronic Engineering
3. Chongqing University
4. Chongqing 400044
5. China
6. Suzhou Institute of Biomedical Engineering
7. Chinese Academy of Sciences
8. Suzhou 215163
9. Department of Informatics and Microsystem Technology
10. University of Applied Sciences
11. Kaiserslautern Zweibruecken 66482
12. Germany