Nonuniform optical undersampling for high-resolution microwave frequency measurements

Daniel R. Reilly*, Shawn X. Wang, Gregory S. Kanter

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


An optical analog-to-digital converter that uses pulses of multiple wavelengths to nonuniformly sample a microwave signal is used to determine an input microwave frequency to a high accuracy over a large frequency range. Measurement times of 4 s lead to frequency errors of ∼ 300 Hz over a measurement range of 10-18 GHz. We also identify the frequency and magnitude of multiple microwave inputs. The simple configuration is robust and practical.

Original languageEnglish (US)
Article number6175104
Pages (from-to)997-999
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number12
StatePublished - 2012
Externally publishedYes


  • Analog-to-digital conversion
  • Microwave photonics
  • Photonic sampling
  • Signal sampling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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