Reconfigurable fractional microwave signal processor based on a microcomb

  • Mengxi Tan
  • , Xingyuan Xu
  • , Jiayang Wu
  • , Thach G. Nguyen
  • , Sai T. Chu
  • , Brent E. Little
  • , Roberto Morandotti
  • , Arnan Mitchell
  • , David J. Moss*
  • *Corresponding author for this work

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

Abstract

We propose and demonstrate reconfigurable fractional microwave signal processing based on an integrated Kerr optical microcomb. We achieve two forms of microwave signal processing functions-A fractional Hilbert transform as well as a fractional differentiator. For the Hilbert transform we demonstrate a phase shift of 45 degrees-half that of a full Hilbert transform, while for the differentiator we achieve square-root differentiation. For both, we achieve high resolution over a broad bandwidth of 17 GHz with a phase deviation of less than 5{\mathrm {o}} within the achieved passband. This performance in both the frequency and time domains demonstrates the versatility and power of micro-combs as a basis for high performance microwave signal processing.

Original languageEnglish
Title of host publication2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728136257
DOIs
StatePublished - Oct 2019
Externally publishedYes
Event2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019 - Ottawa, Canada
Duration: 7 Oct 201910 Oct 2019

Publication series

Name2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019

Conference

Conference2019 IEEE International Topical Meeting on Microwave Photonics, MWP 2019
Country/TerritoryCanada
CityOttawa
Period7/10/1910/10/19

Keywords

  • Microwave photonics
  • micro-ring resonators
  • signal processor

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