RF and microwave photonic temporal signal processing with Kerr micro-combs

Mengxi Tan, Xingyuan Xu, Jiayang Wu, Roberto Morandotti, Arnan Mitchell, David J. Moss

Research output: Contribution to journalReview ArticleOtherpeer-review

31 Citations (Scopus)


Integrated Kerr micro-combs are a powerful source of multiple wavelength channels for photonic radio frequency (RF) and microwave signal processing, particularly for transversal filter systems. They offer significant advantages featuring a compact device footprint, high versatility, large numbers of wavelengths, and wide Nyquist bands. We review progress on photonic RF and microwave high bandwidth temporal signal processing based on Kerr micro-combs with comb spacings from 49 GHz to 200 GHz. We focus on integral and fractional Hilbert transforms, differentiators as well as integrators. The future potential of optical micro-combs for RF photonic applications in terms of functionality and ability to realize integrated solutions is also discussed.

Original languageEnglish
Article number1838946
Number of pages46
JournalAdvances in Physics: X
Issue number1
Publication statusPublished - 2021
Externally publishedYes


  • micro-ring resonators
  • Microwave photonics

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