A Robust 10-Gb/s 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 tradeoff 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 study 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 partially depleted-silicon on insulator CMOS technology that works at 10 Gb/s. The fabricated precoder consumes 13.8 mW and the decoder consumes 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.