ABSTRACT
An ultrahigh-speed InAlAs/InGaAs PIN-HBT OEIC photoreceiver was fabricated and characterized. A transimpedance amplifier with a 500Ω feedback resistor demonstrated a -3dB bandwidth of 20GHz and a gain of 46dBΩ. The fabricated photoreceiver integrated with a 83μm2 p-i-n photodiode demonstrated a -3dB optical bandwidth of 18.6GHz with an input optical dynamic range of 20dB. Clear eye diagrams were obtained up to the 12Gb/s limit of the pattern generator. Large-signal transient simulations indicate that the measured bandwidth of 18.6GHz, the highest reported to date for any integrated front-end photoreceiver, is sufficient for 24Gb/s operation.
