A 5-Gbps opto-electrical receiver with on-chip photodetector in 0.18-µm CMOS

This paper presents an opto-electrical receiver with on-chip photodetector in 0.18-µm CMOS technology. By combing a spatially modulated light detector and an analog equalizer, a maximum data rate of 5 Gbps is achieved. The responsivity of the photodetector is 0.052 A/W. Occupying a core area of 0.72 mm², the fully integrated opto-electrical receiver achieves 4.25 Gbps and 5 Gbps with a power consumption of 144 mW and 183 mW respectively at a BER less than 10⁻¹².