Photonic convolutional accelerator and neural network in the Tera-OPs regime based on Kerr microcombs

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

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


We report a photonic RF arbitrary waveform generator and phase encoded signal generator using a soliton crystal micro-comb source with a free spectral range (FSR) of 48.9 GHz, that provides 80 wavelengths. We achieve arbitrary waveform shapes including square waveforms with a tunable duty ratio from 10% to 90%, sawtooth waveforms with a slope ratio of 0.2 to 1, and a symmetric concave quadratic chirp waveform with an instantaneous frequency of sub GHz. The phase encoded signal generator achieves a high pulse compression ratio of 30 and phase encoding rates from 2 to 6 Gb/s This work verifies the effectiveness of using microcombs for high-performance, broad bandwidth, nearly user-defined RF waveform generation.

Original languageEnglish
Title of host publicationProceedings of SPIE, Integrated Optics: Devices, Materials, and Technologies XXV
EditorsSonia M. Garcia-Blanco, Pavel Cheben
Place of PublicationBellingham WA USA
Number of pages20
ISBN (Electronic)9781510642133, 9781510642140
Publication statusPublished - 2021
EventIntegrated Optics: Devices, Materials, and Technologies XXV 2021 - Online, United States of America
Duration: 6 Mar 202111 Mar 2021 (Proceedings)

Publication series

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


ConferenceIntegrated Optics: Devices, Materials, and Technologies XXV 2021
Country/TerritoryUnited States of America
Internet address


  • convolutional accelerator
  • microcomb
  • neuromorphic processor
  • Optical neural networks

Cite this