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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 7 — Apr. 8, 2013
  • pp: 8558–8563

Photonic fractional Fourier transformer with a single dispersive device

C. Cuadrado-Laborde, A. Carrascosa, A. Díez, J. L. Cruz, and M. V. Andres  »View Author Affiliations

Optics Express, Vol. 21, Issue 7, pp. 8558-8563 (2013)

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In this work we used the temporal analog of spatial Fresnel diffraction to design a temporal fractional Fourier transformer with a single dispersive device, in this way avoiding the use of quadratic phase modulators. We demonstrate that a single dispersive passive device inherently provides the fractional Fourier transform of an incident optical pulse. The relationships linking the fractional Fourier transform order and scaling factor with the dispersion parameters are derived. We first provide some numerical results in order to prove the validity of our proposal, using a fiber Bragg grating as the dispersive device. Next, we experimentally demonstrate the feasibility of this proposal by using a spool of a standard optical fiber as the dispersive device.

© 2013 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(070.2575) Fourier optics and signal processing : Fractional Fourier transforms

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 13, 2012
Revised Manuscript: January 28, 2013
Manuscript Accepted: February 7, 2013
Published: April 1, 2013

C. Cuadrado-Laborde, A. Carrascosa, A. Díez, J. L. Cruz, and M. V. Andres, "Photonic fractional Fourier transformer with a single dispersive device," Opt. Express 21, 8558-8563 (2013)

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