A 50-Gb/s PAM4 Si-Photonic Transmitter With Digital-Assisted Distributed Driver and Integrated CDR in 40-nm CMOS

Qiwen Liao,Xi Xiao,Nanjian Wu,Nan Qi,Miaofeng Li,Shang Hu,Jian He,Bozhi Yin,Jingbo Shi,Jian Liu,Patrick Yin Chiang

IEEE Journal of Solid-state Circuits（2020）

Cited 15|Views174

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Abstract

A 50-Gb/s four-level pulse-amplitude modulation (PAM4) silicon photonic transmitter is presented, which is composed of a 40-nm bulk CMOS driver hybrid integrated with a 180-nm silicon-on-insulator (SOI) CMOS Mach-Zehnder modulator (MZM). To recover and demodulate 50-Gb/s PAM4 data into dual-25-Gb/s nonreturn to zero (NRZ) streams for the co-designed MZM digital-analog converter (DAC), a reference-...

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Key words

Optical transmitters,High-speed optical techniques,Optical modulation,Photonics,Integrated optics,Optical interferometry

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