1. College of Communication Engineering
2. Jilin University
3. Changchun 130012
4. China
5. Wuhan National Laboratory for Optoelectronics & School of Optical and Electronic Information
6. Huazhong University of Science and Technology
7. Wuhan 430074
8. State Key Laboratory of Integrated Optoelectronics
9. College of Electronic Science and Engineering
10. Changchun