AlGaAs/GaAs HBT receiver ICs for a 10 Gbps optical communication system

Key component ICs for an optical communication system such as an equalizing amplifier a rectifier, and a limiting amplifier were fabricated with AlGaAs/GaAs HBTs. The equalizing amplifier with an amplitude detection circuit had an 11 GHz bandwidth, 30-dB maximum voltage gain and over 30-dB controllable gain width. The rectifier could extract 10-GHz signals, and the limiting amplifier had a 36-dB voltage gain at 10 GHz and an over 20-dB dynamic range with an under 10 degrees phase-shift deviation. These optical receiver ICs have a performance sufficient for 10-Gbit/s optical communication system.<
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