Petabit-per-second data transmission using a chip-scale microcomb ring resonator source

Research output: Contribution to journalJournal articleResearchpeer-review


  • D. Kong
  • M. R. Henriksen
  • F. Klejs
  • Z. Ye
  • O. B. Helgason
  • H. E. Hansen
  • H. Hu
  • M. Yankov
  • S. Forchhammer
  • P. Andrekson
  • A. Larsson
  • M. Karlsson
  • J. Schroder
  • Y. Sasaki
  • K. Aikawa
  • T. Morioka
  • M. Galili
  • Victor Torres-Company
  • L. K. Oxenlowe

Optical fibre communication is the backbone of the internet. As essential core technologies are approaching their limits of size, speed and energy-efficiency, there is a need for new technologies that offer further scaling of data transmission capacity. Here we show that a single optical frequency-comb source based on a silicon nitride ring resonator supports data capacities in the petabit-per-second regime. We experimentally demonstrate transmission of 1.84 Pbit s(-1) over a 37-core, 7.9-km-long fibre using 223 wavelength channels derived from a single microcomb ring resonator producing a stabilized dark-pulse Kerr frequency comb. We also present a theoretical analysis that indicates that a single, chip-scale light source should be able to support 100 Pbit s(-1) in massively parallel space-and-wavelength multiplexed data transmission systems. Our findings could mark a shift in the design of future communication systems, targeting device-efficient transmitters and receivers.

A microcomb source based on a silicon nitride ring resonator is shown to support petabit-per-second data transmission over a multicore optical fibre.

Original languageEnglish
JournalNature Photonics
Pages (from-to)798-802
Number of pages8
Publication statusPublished - 20 Oct 2022

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