Photonic RF phase-encoded signal generation with a microcomb source

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

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)


We demonstrate photonic RF phase encoding based on an integrated micro-comb source. By assembling single-cycle Gaussian pulse replicas using a transversal filtering structure, phase encoded waveforms can be generated by programming the weights of the wavelength channels. This approach eliminates the need for RF signal generators for RF carrier generation or arbitrary waveform generators for phase encoded signal generation. A large number of wavelengths - up to 60 - were provided by the microcomb source, yielding a high pulse compression ratio of 30. Reconfigurable phase encoding rates ranging from 2 to 6 Gb/s were achieved by adjusting the length of each phase code. This article demonstrates the significant potentials of this microcomb-based approach to achieve high-speed RF photonic phase encoding with low cost and footprint.

Original languageEnglish
Pages (from-to)1722-1727
Number of pages6
JournalJournal of Lightwave Technology
Issue number7
Publication statusPublished - 1 Apr 2020


  • micro-ring resonators
  • Microwave photonics

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