1. Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
2. Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
3. College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, China
4. School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
5. Engineering Research Center of Integrated Circuits for Next-Generation Communications, Ministry of Education, Southern University of Science and Technology, Shenzhen 518055, China
6. School of Electric Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China