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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 18 — Sep. 9, 2013
  • pp: 21702–21707

Tunable microwave-photonic filter using frequency-to-time mapping-based delay lines

Arash Mokhtari, Kambiz Jamshidi, Stefan Preußler, Avi Zadok, and Thomas Schneider  »View Author Affiliations

Optics Express, Vol. 21, Issue 18, pp. 21702-21707 (2013)

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A new implementation of microwave-photonic filters (MPFs) based on tunable optical delay lines is proposed and demonstrated. The variable delay is based on mapping of the spectral components of an incoming waveform onto the time domain, the application of linearly-varying temporal phase offsets, and an inverse mapping back to the frequency domain. The linear phase correction is equivalent to a frequency offset, and realized though suppressed-carrier single-sideband modulation by a radio-frequency sine wave. The variable delay element, controlled by the selected frequency, is used in one arm of a two-tap MPF. In a proof-of-concept experiment, the free spectral range (FSR) of the MPF was varied by over a factor of four: between 1.2 GHz and 5.3 GHz.

© 2013 OSA

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(130.2035) Integrated optics : Dispersion compensation devices
(070.2615) Fourier optics and signal processing : Frequency filtering
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: May 20, 2013
Revised Manuscript: July 29, 2013
Manuscript Accepted: August 5, 2013
Published: September 6, 2013

Arash Mokhtari, Kambiz Jamshidi, Stefan Preußler, Avi Zadok, and Thomas Schneider, "Tunable microwave-photonic filter using frequency-to-time mapping-based delay lines," Opt. Express 21, 21702-21707 (2013)

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