A 40 Gb/s chip-to-chip interconnect for 8-socket direct connectivity using integrated photonics

Stelios Pitris, Miltiadis Moralis-Pegios, Theonitsa Alexoudi, Joris Lambrecht, Xin Yin, Johan Bauwelinck, Yoojin Ban, Peter De Heyn, Marianna Pantouvaki, Joris Van Campenhout, Ronald Broeke, Nikos Pleros

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
39 Downloads (Pure)

Abstract

We present an O-band any-to-any chip-to-chip (C2C) interconnection at 40 Gb/s suitable for up to 8-socket direct connectivity in multi-socket server boards, utilizing integrated low-energy photonics for the transceiver and routing functions. The C2C interconnect exploits an Si-based ring modulator as its transmitter and a co-packaged photodiode/transimpedance amplifier enabled receiver interconnected over an 8 × 8 Si-based arrayed waveguide grating router, allowing for a single-hop flat-topology interconnection between eight nodes. A proof-of-concept demonstration of the C2C interconnect is presented at 25 and 40 Gb/s for eight possible routing scenarios, revealing clear eye diagrams at both data rates with extinction ratios of 4.8 ± 0.3 and 4.38 ± 0.31 dB, respectively, among the eight routed signals.

Original languageEnglish
Article number6601808
Number of pages9
JournalIEEE Photonics Journal
Volume10
Issue number5
DOIs
Publication statusPublished - 4 Oct 2018
Externally publishedYes

Keywords

  • Optical interconnections
  • Photonic integrated circuits
  • Silicon photonics
  • Wavelength routing

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