1. Shandong College of Electronic Technology, Department of Electronic Engineering, Jinan, Shandong 250014, China
2. Fuzhou University, Institute of Creative Industries Research, Jimei, Xiamen, Fujian 361024, China
3. National Cheng Kung University, Advanced Optoelectronic Technology Center, Institute of Microelectronics and Department of Electrical Engineering, Tainan 70101, Taiwan