Process variation aware crosstalk mitigation for DWDM based photonic NoC architectures

Sai Vineel Reddy Chittamuru, Ishan G. Thakkar, Sudeep Pasricha

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

14 Scopus citations

Abstract

Photonic network-on-chip (PNoC) architectures are a potential candidate for communication in future chip multiprocessors as they can attain higher bandwidth with lower power dissipation than electrical NoCs. PNoCs typically employ dense wavelength division multiplexing (DWDM) for high bandwidth transfers. Unfortunately, DWDM increases crosstalk noise and decreases optical signal to noise ratio (SNR) in microring resonators (MRs) threatening the reliability of data communication. Additionally, process variations induce variations in the width and thickness of MRs causing shifts in resonance wavelengths of MRs, which further reduces signal integrity, leading to communication errors and bandwidth loss. In this paper, we propose a novel encoding mechanism that intelligently adapts to on-chip process variations, and improves worst-case SNR by reducing crosstalk noise in MRs used within DWDM-based PNoCs. Experimental results on the Corona PNoC architecture indicate that our approach improves worst-case SNR by up to 44.13%.

Original languageEnglish
Title of host publicationProceedings of the 17th International Symposium on Quality Electronic Design, ISQED 2016
Pages57-62
Number of pages6
ISBN (Electronic)9781509012138
DOIs
StatePublished - May 25 2016
Event17th International Symposium on Quality Electronic Design, ISQED 2016 - Santa Clara, United States
Duration: Mar 15 2016Mar 16 2016

Publication series

NameProceedings - International Symposium on Quality Electronic Design, ISQED
Volume2016-May
ISSN (Print)1948-3287
ISSN (Electronic)1948-3295

Conference

Conference17th International Symposium on Quality Electronic Design, ISQED 2016
Country/TerritoryUnited States
CitySanta Clara
Period3/15/163/16/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality

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