Academic Offices

Life Fellow, Institute of Electrical and Electronics Engineers, USA (1979 election)
Fellow, The Institution of Engineering and Technology, UK
Fellow, The Royal Society of London, UK (1997 election)
Fellow, The Royal Academy of Engineering, UK (1989 election)
Fellow, The Marconi Society, USA (1985 election)
Honorary Fellow (1994 election) and former President, The Hong Kong Academy of Engineering Sciences (HKAES), Hong Kong
Distinguished Fellow, The Hong Kong Computer Society, Hong Kong (1989 election)
Honorary Fellow, The Hong Kong Institute of Engineers (1994 election)
Academician, Academia Sinica, Taipei (1992 election)
Member, Optical Society of America, USA
Member, European Academy of Sciences and Arts, Austria
Member, United States National Academy of Engineering (1990 election)
Foreign Member, Royal Swedish Academy of Engineering Sciences, Sweden (1988 election)
Foreign Member, Chinese Academy of Sciences, Beijing (1996 election)
Honorary Fellow, The Queen Mary, University of London
Honorary Professor, The Chinese University of Hong Kong (appointed in 1996)
Honorary Professor, Peking University, Beijing (appointed in 1995)
Honorary Professor, Tsinghua University, Beijing (appointed in 1995)
Honorary Professor, University of International Business and Economics, Beijing (appointed in 1995)
Honorary Professor, Beijing University of Posts and Telecommunications (appointed in 1995)
Chair Professor by special appointment, National Taiwan University, Taipei (appointed in 2003)
Honorary Professor (1997–2002), Department of Electronic Engineering, City University of Hong Kong
Lifetime Honorary Professorship, City University of Hong Kong (appointed on January 1, 2002)
Hong Kong Affairs Adviser (港事顧問) (May 1994 - June 30, 1997)
Advisor of Macao Science and Technology Council