Broadband Photonic RF Channelizer With 92 Channels Based on a Soliton Crystal Microcomb

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

16 Scopus Citations
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Author(s)

  • Xingyuan Xu
  • Mengxi Tan
  • Jiayang Wu
  • Andreas Boes
  • Thach G. Nguyen
  • Brent E. Little
  • Roberto Morandotti
  • Arnan Mitchell
  • David J. Moss

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number9099964
Pages (from-to)5116-5121
Journal / PublicationJournal of Lightwave Technology
Volume38
Issue number18
Online published26 May 2020
Publication statusPublished - 15 Sep 2020

Abstract

We report a broadband radio frequency (RF) channelizer with up to 92 channels using a coherent microcomb source. A soliton crystal microcomb, generated by a 49 GHz micro-ring resonator (MRR), is used as a multi-wavelength source. Due to its ultra-low comb spacing, up to 92 wavelengths are available in the C band, yielding a broad operation bandwidth. Another high-Q MRR is employed as a passive optical periodic filter to slice the RF spectrum with a high resolution of 121.4 MHz. We experimentally achieve an instantaneous RF operation bandwidth of 8.08 GHz and verify RF channelization up to 17.55 GHz via thermal tuning. Our approach is a significant step towards the monolithically integrated photonic RF receivers with reduced complexity, size, and unprecedented performance, which is important for wide RF applications ranging from broadband analog signal processing to digital-compatible signal detection.

Research Area(s)

  • Integrated optical frequency comb, Microwave photonic, signal channelization

Citation Format(s)

Broadband Photonic RF Channelizer With 92 Channels Based on a Soliton Crystal Microcomb. / Xu, Xingyuan; Tan, Mengxi; Wu, Jiayang; Boes, Andreas; Nguyen, Thach G.; Chu, Sai T.; Little, Brent E.; Morandotti, Roberto; Mitchell, Arnan; Moss, David J.

In: Journal of Lightwave Technology, Vol. 38, No. 18, 9099964, 15.09.2020, p. 5116-5121.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review