In/AlAs/InGaAs-InP heterojunction dipolar transistor (HBT) technology
offers high device speed, low 1/f flicker noise and monolithic integra
tion of 1.55 mu m InGaAs photodetectors making them well suited for ne
xt-generation, high data rte optoelectronic communication links. Appli
cation toward next-generation >40 Gbps communication systems is discus
sed, and sate-of-the-art receiver capability is presented.