InP-HBT chip-set for 40-Gb/s fiber optical communication systems operational at 3 V. - Mehran Mokhtari; Thomas Swahn; Robert H. Walden; William E. Stanchina; Michael Kardos; Tarja Juhola; Gerd Schuppener; Hannu Tenhunen; Thomas Lewin (IEEE J. Solid State Circuits, 1997)