Affiliation: | a Department of Electro-Optical Engineering, National Cheng Kung University, Tainan 701, Taiwan, ROC b Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan, ROC c Institute of Microelectronics, Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan, ROC |