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Transient and frequency characteristics of photodetectors and their effects on data receivers in fiber-linked communication systems

This paper tries to characterize avalanche photodiodes (APD) in time and frequency domain and to analyze its influences on optical receivers. For this reason a circuit model of PIN-avalanche photodiodes based on carrier rate equations and a 2.5 Gb/s CMOS optical front-end is designed to contemplate the mutual effects of photodetector characteristics and receiver performances.