A robust 10 Gbps duobinary transceiver in 0.13 μm SOI CMOS for short-haul optical networks

Duobinary modulation is a robust and attractive coding format for high-speed serial data transmission because it allows an excellent trade-off between speed, noise and power. However, conventional architectures reported in the literature performing the necessary precodification in a duobinary transceiver suffer from a severe vulnerability to glitches that limits their performances at high data rates. This work presents a new precoder scheme that overcomes this limitation with a very small design, area and power consumption, and a time-domain analysis that confirms the advantages of the proposed solution. The proposed precoder has been implemented in a full duobinary transceiver fabricated in a 0.13-μm PD-SOI CMOS technology that works at 10 Gbps. The fabricated precoder consumes 13.8 mW and the decoder, 23.2 mW from a single supply of 1.2 V. Experimental results are provided for a simulated channel of 50-m plastic optical fiber