A 40Gb/s PAM4 Transmitter based on a Ring-resonator Optical DAC

Sajjad Moazeni and Vladimir Stojanovic

EECS Department
University of California, Berkeley
Technical Report No. UCB/EECS-2017-23
May 1, 2017

http://www2.eecs.berkeley.edu/Pubs/TechRpts/2017/EECS-2017-23.pdf

Next generations of large data-centers and supercomputers are lagging due to the stagnation of interconnects speed. Silicon-photonics has been proposed as a potential solution to achieve low-cost, high-speed, and energy-efficient optical links in silicon-based processes. This work presents an optical digital-to-analog converter based on a segmented, active microring resonator in a zero-change commercial 45nm SOI CMOS process. Using this design approach, a monolithically integrated 40Gb/s PAM4 transmitter is demonstrated with 42fJ/b modulator and driver energy and 0.67Tb/s/mm2 bandwidth density. This scheme is suitable for systems-on-chips with large number of I/O links such as processors and switches in large-scale computing and storage systems.

Advisor: Vladimir Stojanovic


BibTeX citation:

@mastersthesis{Moazeni:EECS-2017-23,
    Author = {Moazeni, Sajjad and Stojanovic, Vladimir},
    Title = {A 40Gb/s PAM4 Transmitter based on a Ring-resonator Optical DAC},
    School = {EECS Department, University of California, Berkeley},
    Year = {2017},
    Month = {May},
    URL = {http://www2.eecs.berkeley.edu/Pubs/TechRpts/2017/EECS-2017-23.html},
    Number = {UCB/EECS-2017-23},
    Abstract = {Next generations of large data-centers and supercomputers are lagging due to the stagnation of interconnects speed. Silicon-photonics has been proposed as a potential solution to achieve low-cost, high-speed, and energy-efficient optical links in silicon-based processes. This work presents an optical digital-to-analog converter based on a segmented, active microring resonator in a zero-change commercial 45nm SOI CMOS process. Using this design approach, a monolithically integrated 40Gb/s PAM4 transmitter is demonstrated with 42fJ/b modulator and driver energy and 0.67Tb/s/mm2 bandwidth density. This scheme is suitable for systems-on-chips with large number of I/O links such as processors and switches in large-scale computing and storage systems.}
}

EndNote citation:

%0 Thesis
%A Moazeni, Sajjad
%A Stojanovic, Vladimir
%T A 40Gb/s PAM4 Transmitter based on a Ring-resonator Optical DAC
%I EECS Department, University of California, Berkeley
%D 2017
%8 May 1
%@ UCB/EECS-2017-23
%U http://www2.eecs.berkeley.edu/Pubs/TechRpts/2017/EECS-2017-23.html
%F Moazeni:EECS-2017-23