High-gain transimpedance amplifier in InP-based HBT technology forthe receiver in 40 Gb/s optical-fiber TDM links

摘要

A monolithic integrated transimpedance amplifier for the receiverin a 40 Gb/s optical-fiber TDM system has been fabricated in anInP-based HBT technology. Despite its high gain (transimpedance of 2 kBin the limiting mode, 10 kΩ in the linear mode) the completeamplifier was realized on a single chip. Clear output eye diagrams weremeasured up to 43 Gb/s at the differential 50 Ω output: underrealistic driving conditions. The output voltage swing of 0.6 V_pp does not change within the demanded input dynamic range of 6 dB.At the upper input current level even 48 Gb/s was reached. The powerconsumption is approximately 600 mW at a single supply voltage of -5.5 V