A 20Gb/s NRZ/PAM-4 1V Transmitter in 40nm CMOS Driving a Si-Photonic Modulator in 0.13µm CMOS

📋 论文概要

本文提出了一种20Gb/s的NRZ/PAM-4发射机，采用40nm CMOS工艺实现，用于驱动0.13µm CMOS硅光调制器。通过使用较小的反相器降低段电容以及利用随机数据减少有效电容，实现了显著的功耗节省。

💡 主要创新点

• 采用40nm CMOS工艺实现20Gb/s NRZ/PAM-4双模发射机驱动硅光调制器
• 通过优化反相器尺寸和利用数据随机性降低段电容和有效电容，实现功耗节省（仿真显示二进制PAM-16相比NRZ节省82.5%功率）

🏷 关键词

📄 原文摘要

Sanjay Sunder2, Jan Van der Spiegel1, Yifan Wang2, Mark Webster2, Will Wilson2 because a smaller inverter can be used for a reduced segment capacitance, and the effective capacitance is also reduced since not all segments are switching simultaneously with random input data. Simulations show an 82.5% and 88.8% power savings for binary and thermometer code weighted PAM-16 from NRZ modulation, respectively. The power can be further reduced by increasing the number of levels at the expense of increased receiver complexity and small optical SNR due to the reduction of the eye height. University of Pennsylvania, Philadelphia, PA, Cisco Systems, Allentown, PA 1 2 The need for more bandwidth driven by streaming video and other data intensive applications has been steadily pushing the optical link speed to the 40G/100G domain. Compared to VCSEL and ring resonator, Mach-Zehnder Interferometer (MZI) is the best solution for long distance (>500m), high data rate (>28Gb/s)

👥 作者与机构

Xiaotie Wu1, Bipin Dama2, Prakash Gothoskar2, Peter Metz2, Kal Shastri2,