High-sensitivity 40 Gbit/s photoreceiver using GaAsPHEMT distributed amplifiers

Abstract
The authors report a 40 Gbit/s photoreceiver made with a GaAlInAs/InP 0.78 A/W, a 50 GHz side illumination photodiode and three GaAs PHEMT distributed amplifiers, assembled in a pigtailed module, giving a 37 GHz bandwidth, a 10.4 pA/√Hz average input noise and a 65 dBΩ transimpedance.