1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu, Sichuan Province, China
2. School of Physics and Optoelectronic Engineering, Guangdong University of Technology, Guangzhou, Guangdong Province, China
3. School of Automation, Guangdong University of Technology, Guangzhou, Guangdong Province, China
4. Guangdong Renenyu Optoelectronic Technology Co., Ltd, Guangdong Province, China