Abstract
Electronic driver circuits for semiconductor lasers, optical modulators and optical amplifier gates used in fibre optical communication have been realised with InP/InGaAs double heterojunction bipolar transistors (HBTs) with f/sub T/=73 GHz and f/sub max/=112 GHz. Achievements combine output voltages of 3.5 V and current swings of 140 mA across 25 /spl Omega/ loads with rise and fall times of 60 ps. The driver ICs operate up to 12 Gbit/s.
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