Pseudomorphic 2DEG FET ICs for ultra high-speed optical communication systems with an external optical modulator

An optical modulator driver IC and a preamplifier IC for 10 Gb/s optical communication systems have been constructed. AlGaAs/InGaAs/GaAs pseudomorphic 2DEG FETs with a gate length of 0.35 mu m have implemented these ICs. The optical modulator driver IC has operated at a data rate above 10 Gb/s with a 4 V/sub P-P/ high output voltage swing. The measured bandwidth for the preamplifier IC is 13.0 GHz with a 47 dB Omega transimpedance gain.<
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