J.W. Lin - Department of Physics , National Tsing Hua University
H.P. Chuang - Department of Physics , National Tsing Hua University
F.M. Kuo - Department of Electrical Engineering , National Central University
C.H. Lin - Department of Physics , National Tsing Hua University
T.A. Liu - Center for Measurement Standards , Industrial Technology Research Institute
J.W. Shi - Department of Electrical Engineering , National Central University
C.B. Huang - Department of Physics , National Tsing Hua University
C.L. Pan - Department of Physics , National Tsing Hua University