1. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
3. School of Electronic and Computer Engineering, Shenzhen Graduate School, Peking University, Shenzhen 518055, China