Ioannis Roudas received the B.S. degree in physics and the M.S. degree in electronics and radio engineering from the University of Athens, Athens, Greece, in 1988 and 1990, respectively, and the M.S. and Ph.D. degrees in coherent optical communication systems from the Ecole Nationale Supérieure des Télécommunications (currently Télécom ParisTech), Paris, France, in 1991 and 1995, respectively. During 1995–1998, he was with the Optical Networking Research Department, Bell Communications Research (Bellcore), Red Bank, NJ, USA. At the same time, he taught for two semesters, as an Adjunct Professor, with Columbia University. He was subsequently with the Photonic Modeling and Process Engineering Department, Corning Inc., Somerset, NJ, from 1999 to 2002. During 2003–2011, he was an Associate Professor of optical communications with the Department of Electrical and Computer Engineering, University of Patras. In addition, he taught, as an Adjunct Professor, with the City University of New York and the Hellenic Open University. During 2011–2016, he was a Research Associate with the Science and Technology Division, Corning, Inc., Corning, NY, USA. Since July 2016, he has been the Gilhousen Telecommunications Chair Professor with the Department of Electrical and Computer Engineering, Montana State University, Bozeman, MT, USA. He has authored or coauthored more than 100 papers in scientific journals and international conferences and holds five patents. Dr. Roudas is an Associate Editor for the IEEE Photonics Journal.