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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21564–21569

20 GHz arbitrary radio-frequency waveform generator based on incoherent pulse shaping

Víctor Torres-Company, Jesús Lancis, Pedro Andrés, and Lawrence R. Chen  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21564-21569 (2008)

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We demonstrate a new approach of photonically assisted radio-frequency (RF) waveform generation using a spectrally incoherent light source. The system is based on the so-called generalized frequency-to-time mapping operation. In this work, external modulation of the source is done by concatenating two electro-optic Mach-Zehnder modulators properly biased to achieve short pulse gates which allow for broad bandwidth electrical signals. Also, the spectral shaping stage is performed prior to O/E conversion. A detailed theoretical analysis demonstrates that even in this case the frequency-to-time mapping is preserved. The key is that the noise level is greatly reduced because the amplitude filter serves as noise rejecter. Experimental results show up to ~20 GHz electrical bandwidth signals using 10 Gb/s standard telecommunication equipment with the nice feature of repetition rate control on the generated electrical waveform.

© 2008 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(320.5540) Ultrafast optics : Pulse shaping
(060.5625) Fiber optics and optical communications : Radio frequency photonics
(070.6120) Fourier optics and signal processing : Spatial light modulators

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: October 10, 2008
Revised Manuscript: November 15, 2008
Manuscript Accepted: November 17, 2008
Published: December 15, 2008

Víctor Torres-Company, Jesús Lancis, Pedro Andrés, and Lawrence R. Chen, "20 GHz arbitrary radio-frequency waveform generator based on incoherent pulse shaping," Opt. Express 16, 21564-21569 (2008)

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