Behavior Model and Experimental Research of Monolithic CMOS Compatible Photodetector and Preamplifier

The behavior model of the double photo-diodes (DPD) is presented in the paper. The relationship between photocurrent and optical power is shown. With this model, a 1 GHz monolithic photo-detector (PD) and trans-impedance amplifier (TIA) is designed and fabricated with the standard 0.35 mum CMOS technique. The experimental results show that the -3 dB bandwidth is 754 MHz, and the 1 GHz wave of the transient response can be got