1. Faculty of Automation and Information Engineering, Xi’an University of Technology, Xi’an, China
2. State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China
3. Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China
4. State Key Laboratory of Optical Communication Technologies and Networks and the National Optoelectronics Innovation Center, Wuhan Research Institute of Posts and Telecommunications, Wuhan, China
5. State-Key Laboratory of Analog and Mixed-Signal VLSI and IME/ECE-FST, University of Macau, Macau, China