In this paper we present the design approach and measurements of an optical receiver suited for IM-DD systems operating up to 2.5 Gbit/s bit-rate. The receiver is composed by a Ga-As MMIC transimpedance amplifier and a commercially available pin photodiode. The MMIC amplifier has been fabricated and it has been measured on wafer, showing a -3 dB cut-off frequency of 2.6 GHz, stability and low sensitivity to bias variations.
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