1. College of Physics and Information Engineering, Fuzhou University, Fuzhou 350108, China
2. Department of Electronic and Computer Engineering, Hanyang University, Seoul 04763, Republic of Korea
3. Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
4. Institute of Microengineering and Nanoelectronics (IMEN), University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia