Quantifying the Accuracy of Microcomb-based Photonic RF 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
  • Mengxi Tan
  • Xingyuan Xu
  • Brent E. Little
  • Roberto Morandotti
  • Arnan Mitchell
  • David J. Moss

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number7500317
Journal / PublicationIEEE Journal on Selected Topics in Quantum Electronics
Volume29
Issue number6
Online published11 Apr 2023
Publication statusPublished - Nov 2023

Abstract

Photonic RF transversal signal processors, which are equivalent to reconfigurable electrical digital signal processors but implemented with photonic technologies, are attractive for high-speed information processing. Optical microcombs are extremely powerful as sources for RF photonics since they can generate many wavelength channels from compact micro-resonators, offering greatly reduced size, power consumption, and complexity. Recently, a variety of signal processing functions have been demonstrated using microcomb-based photonic RF transversal signal processors. Here, we provide a detailed analysis for quantifying the processing accuracy of microcomb-based photonic RF transversal signal processors. First, we investigate the theoretical limitations of the processing accuracy determined by tap number, signal bandwidth, and pulse waveform. Next, we discuss the practical error sources from different experimental components of the signal processors. Finally, we assess the relative contributions of the two to the overall accuracy. We find that the overall accuracy is mainly limited by experimental factors when the processors are properly designed to minimize the theoretical limitations, and that these remaining errors can be further greatly reduced by introducing feedback control to calibrate the processors' impulse response. These results provide a useful guide for designing microcomb-based photonic RF transversal signal processors to optimize their accuracy. © 2023 IEEE.

Research Area(s)

  • Integrated optics, microwave photonics, Optical fibers, optical microcombs, Optical pulses, Optical resonators, optical signal processing, Photonics, Program processors, Radio frequency

Citation Format(s)

Quantifying the Accuracy of Microcomb-based Photonic RF Transversal Signal Processors. / Sun, Yang; Wu, Jiayang; Li, Yang et al.
In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 29, No. 6, 7500317, 11.2023.

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