A SIMPLE HIGH-SPEED HIGH-OUTPUT VOLTAGE DIGITAL RECEIVER

We present measurements of a simple photoreceiver capable of generatin g 2.0 V at 15-Gb/s nonreturn-to-zero (NRZ), and 2.0 and 3.0 V at 24 an d 10-Gb/s return-to-zero (RZ), respectively, directly from a p-i-n pho todiode. Thus, this photoreceiver generates signal levels compatible w ith high-speed logic, clock recovery, and/or modulation with low-V-pi LiNbO3 modulators without the need for electrical postdetection amplif ication. The bit-error ratio (BER) is not compromised with this approa ch since this receiver generates clean eye diagrams with a BER of 10(- 9) with -30-dBm input at 10 Gb/s.