Optimizing the accuracy of microcomb-based microwave photonic transversal signal processors

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

4 Scopus Citations
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Author(s)

  • Yang Sun
  • Jiayang Wu
  • Yang Li
  • Xingyuan Xu
  • Guanghui Ren
  • Mengxi Tan
  • Brent E. Little
  • Roberto Morandotti
  • Arnan Mitchell
  • David J. Moss

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)7223-7237
Journal / PublicationJournal of Lightwave Technology
Volume41
Issue number23
Online published12 Sept 2023
Publication statusPublished - 1 Dec 2023

Abstract

Microwave photonic (MWP) transversal signal processors offer a compelling solution for realizing versatile high-speed information processing by combining the advantages of reconfigurable electrical digital signal processing and high-bandwidth photonic processing. With the capability of generating a number of discrete wavelengths from micro-scale resonators, optical microcombs are powerful multi-wavelength sources for implementing MWP transversal signal processors with significantly reduced size, power consumption, and complexity. By using microcomb-based MWP transversal signal processors, a diverse range of signal processing functions have been demonstrated recently. In this paper, we provide a detailed analysis for the processing inaccuracy that is induced by the imperfect response of experimental components. First, we investigate the errors arising from different sources including imperfections in the microcombs, the chirp of electro-optic modulators, chromatic dispersion of the dispersive module, shaping errors of the optical spectral shapers, and noise of the photodetector. Next, we provide a global picture quantifying the impact of different error sources on the overall system performance. Finally, we introduce feedback control to compensate the errors caused by experimental imperfections and achieve significantly improved accuracy. These results provide a guide for optimizing the accuracy of microcomb-based MWP transversal signal processors. © 2023 IEEE.

Research Area(s)

  • Adaptive optics, High-speed optical techniques, Microwave photonics, Optical fibers, optical microcombs, Optical resonators, optical signal processing, Program processors

Citation Format(s)

Optimizing the accuracy of microcomb-based microwave photonic transversal signal processors. / Sun, Yang; Wu, Jiayang; Li, Yang et al.
In: Journal of Lightwave Technology, Vol. 41, No. 23, 01.12.2023, p. 7223-7237.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review