1. Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
2. National Key Laboratory of Application Specific Integrated Circuit, Hebei Semiconductor Research Institute, Shijiazhuang 050000, China
3. Institute of Microscale Optoelectronics (IMO), Shenzhen University, Shenzhen, China
4. College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China
5. College of Physics and Optoelectronic Engineering, Shenzhen University, 3688 Nanhai Rd., Shenzhen, Guangdong Province 518060, China