High-sensitivity high-gain SOA-filter-PIN-PHEMT 40-Gb/s photoreceiver

We report on a 40 Gb/s photoreceiver made with a 27 dB-gain (semiconductor optical amplifier) SOA-0.9 nm tunable filter module, connected to a 0.78 A/W-31 dB-gain PIN-GaAs PHEMT module. Overall gain is 0.7 V//spl mu/W, with a 37 GHz bandwidth, a 10.4 pA//spl radic/Hz electrical noise and a 7-8 dB noise figure for SOA.