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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 22 — Oct. 26, 2009
  • pp: 19798–19807

Arbitrary-order all-fiber temporal differentiator based on a fiber Bragg grating: design and experimental demonstration

Ming Li, Davide Janner, Jianping Yao, and Valerio Pruneri  »View Author Affiliations

Optics Express, Vol. 17, Issue 22, pp. 19798-19807 (2009)

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A new technique to design an all-fiber temporal differentiator that has a large bandwidth and an arbitrary differentiation order is proposed and investigated. The proposed temporal differentiator is a special fiber Bragg grating (FBG) that is designed by controlling its magnitude and phase responses with the discrete layer peeling (DLP) method. There are three important features of this technique: 1) the temporal differentiator has an arbitrary magnitude response and a controllable bandwidth; 2) the temporal differentiator can be designed and fabricated with an arbitrary differentiation order that is realized in a single FBG; 3) the required maximum index modulation of the FBG-based differentiator is largely decreased by using a Gaussian windowing function. The use of the proposed technique to design temporal differentiators with a differentiation order up to the fourth and with a bandwidth up to 500 GHz is studied. A proof-of-concept experiment is then carried out. A first- and a second-order temporal differentiator with a bandwidth of 25 GHz are experimentally demonstrated.

© 2009 OSA

OCIS Codes
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(350.2770) Other areas of optics : Gratings
(070.7145) Fourier optics and signal processing : Ultrafast processing

ToC Category:
Fourier Optics and Signal Processing

Original Manuscript: July 17, 2009
Revised Manuscript: September 5, 2009
Manuscript Accepted: September 14, 2009
Published: October 16, 2009

Ming Li, Davide Janner, Jianping Yao, and Valerio Pruneri, "Arbitrary-order all-fiber temporal differentiator based on a fiber Bragg grating: design and experimental demonstration," Opt. Express 17, 19798-19807 (2009)

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