Towards high-performance and power-efficient optical NoCs using silicon-in-silica photonic components

Elena Kakoulli, Vassos Soteriou, Charalambos Koutsides, Kyriacos Kalli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Networks-on-Chips (NoCs) are meeting the growing inter-tile communication needs of multicore chips. However, achieving system scalability by utilizing hundreds of cores on-chip requires high performance, yet energy-efficient on-chip interconnects. As electrical interconnects are marred by high energy-to-bandwidth costs, threatening multicore scalability, on-chip nanophotonics, which offer high throughput, yet energy-efficient communication, are an alternative attractive solution. In this paper we consider silicon nanophotonic components that are embedded completely within the silica (SiO2) substrate as opposed to prior-art that utilizes die on-surface silicon nanophotonics. As nanophotonic components now reside in the silica substrate's subsurface, a greater portion of a chip's real estate can be utilized by cores and routers, while non-obstructive interconnect geometries offering higher network throughput can be implemented. First, we show using detailed simulations based on commercial tools that such silicon-in-silica (SiS) structures are feasible, and then demonstrate our proof of concept by utilizing a hybrid SiS-based photonic mesh-diagonal links topology that provides both higher effective throughput and throughput-to-power ratio versus prior-art.

Original languageEnglish (US)
Title of host publicationProceedings - 2015 9th International Workshop on Interconnection Network Architectures
Subtitle of host publicationOn-Chip, Multi-Chip, INA-OCMC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-4
Number of pages4
ISBN (Electronic)9781479918706
DOIs
StatePublished - Feb 27 2015
Event2015 9th International Workshop on Interconnection Network Architectures: On-Chip, Multi-Chip, INA-OCMC 2015 - Amsterdam, Netherlands
Duration: Jan 19 2015 → …

Publication series

NameProceedings - 2015 9th International Workshop on Interconnection Network Architectures: On-Chip, Multi-Chip, INA-OCMC 2015

Other

Other2015 9th International Workshop on Interconnection Network Architectures: On-Chip, Multi-Chip, INA-OCMC 2015
CountryNetherlands
CityAmsterdam
Period1/19/15 → …

Keywords

  • Nanophotonics
  • Networks-on-Chips
  • Photonic Interconnects
  • Silicon-in-Silica

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Software

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