Versatile, high bandwidth, RF and microwave photonic Hilbert transformers based on Kerr micro-combs

Yang Li, Mengxi Tan, Jiayang Wu, Xingyuan Xu, Yang Sun, Andreas Boes, Bill Corcoran, Thach G. Nguyen, Sai T. Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss

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


We experimentally demonstrate bandwidth-tunable RF photonic Hilbert transformer based on an integrated Kerr microcomb source. The micro-comb is generated by an integrated micro-ring resonator with a free spectral range of 48.9 GHz, yielding 75 micro-comb lines in the telecom C-band. By programming and shaping the generated comb lines according to calculated tap weights, we demonstrate high-speed Hilbert transform functions with tunable bandwidths ranging from 1.2 GHz to 15.3 GHz, switchable center frequencies from baseband to 9.5 GHz, and arbitrary fractional orders. The experimental results show good agreement with theory and confirm the effectiveness of our approach.

Original languageEnglish
Title of host publicationProceedings of SPIE - Integrated Optics: Devices, Materials, and Technologies XXVI
EditorsSonia M. Garcia-Blanco, Pavel Cheben
Place of PublicationBellingham WA USA
Number of pages12
ISBN (Electronic)9781510648791
Publication statusPublished - 5 Mar 2022
EventConference on Integrated Optics - Devices, Materials, and Technologies XXVI 2022 - Online, United States of America
Duration: 20 Feb 202224 Feb 2022 (Proceedings)

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceConference on Integrated Optics - Devices, Materials, and Technologies XXVI 2022
Country/TerritoryUnited States of America
Internet address


  • all-optical signal processing
  • Hilbert transform
  • integrated optics
  • Kerr frequency comb

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