ผู้เขียน: Ian Underwood

David Armitage, Consultant, Los Altos, CA94024, USA Dr Ian Underwood, Reader, Dept of Electrical Engineering, The University of Edinburgh, King”s Buildings, Mayfield Road, Edinburgh EH9 3JL, Scotland Dr Shin-Tson Wu, Provost Professor of Optics, University of Central Florida, School of Optics – CREOL, 4000 Central Florida Boulevard PO Box 162700, Orlando, Florida 32816-2700, USA