Demonstrations of analog-to-digital conversion using a frequency domain stretched processor

Randy Ray Reibel, Calvin Harrington, Jason Dahl, Charles Ostrander, Peter Aaron Roos, Trenton Berg, R. Krishna Mohan, Mark A. Neifeld, Wm Randall Babbitt

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


The first proof-of-concept demonstrations are presented for a broadband photonic-assisted analog-to-digital converter (ADC) based on spatial spectral holography (SSH). The SSH-ADC acts as a frequencydomain stretch processor converting high bandwidth input signals to low bandwidth output signals, allowing the system to take advantage of high performance, low bandwidth electronic ADCs. Demonstrations with 50 MHz effective bandwidth are shown to highlight basic performance with ∼5 effective bits of vertical resolution. Signal capture with 1600 MHz effective bandwidth is also shown. Because some SSH materials span over 100 GHz and have large time apertures (∼10 μs), this technique holds promise as a candidate for the next generation of ADCs.

Original languageEnglish (US)
Pages (from-to)11281-11286
Number of pages6
JournalOptics Express
Issue number14
StatePublished - Jul 6 2009
Externally publishedYes


  • (070.1170) Analog optical signal processing
  • (090.2900) Holographic recording materials

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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