1990/8-2020/1 (on leave 1993/2-1994/7) | Professor Department of Electronics Engineering and Institute of Electronics National Chiao Tung University Hsinchu, Taiwan, ROC |
1981/8-1983/12 | Member of Technical Staff Bell Telephone Laboratories New Jersey, USA |
1984/1-1990/8, 1993/2-1994/7 | Member of Technical Staff Bellcore (Bell Communications Research, Inc.) New Jersey, USA |