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Conferences > OFC > 2019 > Tu3A > Tu3A.2

A 50Gb/s PAM-4 Retimer-CDR + VCSEL Driver with Asymmetric Pulsed Pre-Emphasis Integrated into a Single CMOS Die

Shang Hu, Tingyu Yao, Bozhi Yin, Chunyu Song, Lei Zhao, Juncheng Wang, Lei Wang, Rui Bai, Xin Wang, Tao Xia, Yi Peng, Binbin Yao, Yuan Li, Xuefeng Chen, Quan Pan, Nan Qi, and Patrick Yin Chiang

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Abstract

A 50 Gb/s PAM-4 Retimer-CDR + VCSEL driver is fully-integrated in a 40nm CMOS process. Measurement results demonstrate wide optical eye openings using a 16GHz bandwidth VCSEL, achieving > 4 dB extinction ratio and < 8 pJ/bit energy efficiency.

© 2019 The Author(s)

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