Reconfigurable photonic rf filters based on integrated kerr frequency comb sources

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

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

1 Citation (Scopus)


We demonstrate two categories of photonic radio frequency (RF) filters based on integrated optical micro-combs. The first one is based on the transversal filtering structure and the second one is based on the channelization technique. The large number of wavelengths brought about by the microcomb results in a significantly increased RF spectral resolution and a large instantaneous bandwidth for the RF filters. For the RF transversal filter, we demonstrated Q factor enhancement, improved out-of-band rejection, tunable centre frequency, and reconfigurable filtering shapes. While a high resolution of 117 MHz, a large RF instantaneous bandwidth of 4.64 GHz, and programmable RF transfer functions including binary-coded notch filters and RF equalizing filters with reconfigurable slopes are demonstrated for the RF channelized filter. The microcomb-based approaches feature a potentially much smaller cost and footprint, and is promising for integrated photonic RF filters.

Original languageEnglish
Title of host publication2019 International Topical Meeting on Microwave Photonics (MWP)
EditorsLawrence R. Chen
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)9781728136240
ISBN (Print)9781728136257
Publication statusPublished - 2019
Externally publishedYes
EventIEEE International Topical Meeting on Microwave Photonics (MWP) 2019 - Ottawa, Canada
Duration: 7 Oct 201910 Oct 2019
Conference number: MWP 2019


ConferenceIEEE International Topical Meeting on Microwave Photonics (MWP) 2019
Internet address


  • micro-ring resonators
  • Microwave photonics

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