H.-Y. Huang - Department of Electrical Engineering, National Central University
J.-W. Shi - Department of Electrical Engineering, National Central University
Y.-S. Wu - Department of Electrical Engineering, National Central University
J.-I. Chyi - Department of Electrical Engineering, National Central University
J.-K. Sheu - National Cheng Kung University
W.-C. Lai - National Cheng Kung University
G.-R. Lin - Institute of Electro-Optical Engineering, National Chaio Tung University
Ci-Ling Pan - Institute of Electro-Optical Engineering, National Chaio Tung University