A high-sensitivity 40-Gbit/s optical receiver using packaged GaAs HBT-ICs

Summary form only given. In this paper, we report the development of 40-Gbit/s optical receiver that employs three packaged AlGaAs-InGaAs HBT ICs: a preamplifier, a distributed amplifier, and a D-type flip-flop circuit. Approaches have been applied in packaged IC design for high-speed operation, which resulted in a very high receiver sensitivity at 40 Gbit/s.