1. Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2. State Key Laboratory of ASIC and System, School of Microelectronics, Shanghai Institute of Intelligent Electronics and Systems, Fudan University, Shanghai, China
3. Dongguan Institute of Opto-Electronics, Peking University, Dongguan, China
4. M-MOS Semiconductor Hong Kong Ltd., Hong Kong, China