Demonstration of continuously variable true-time delay in frequency dependent phase compensating system with acousto-optics and liquid crystal modulator

Judit Reményi, Pál Maák, István Frigyes, László Jakab, Péter Richter

Research output: Contribution to journalArticle

1 Citation (Scopus)


We present an optical heterodyne acousto-optic delay line performing true-time delay of microwave pulses based on the direct practical realization of the time shifting possibility embedded in the Fourier transformation of the differentially phase shifted spectrum. New feature of the system is the demonstration of continuously variable time delay by using a liquid crystal spatial light modulator. We demonstrate the concept experimentally through time shifting 1 μs long pulses in a time domain of ±300 ns.

Original languageEnglish
Pages (from-to)211-220
Number of pages10
JournalOptics Communications
Issue number1-6
Publication statusPublished - Oct 15 2003



  • Acousto-optic signal processing
  • Delay effects
  • Liquid crystal display
  • Phase shifters
  • Phased arrays
  • Pulse measurement
  • Spatial light modulator

ASJC Scopus subject areas

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

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