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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 22 — Oct. 30, 2006
  • pp: 10699–10707

Ultrafast all-optical differentiators

Radan Slavík, Yongwoo Park, Mykola Kulishov, Roberto Morandotti, and José Azaña  »View Author Affiliations

Optics Express, Vol. 14, Issue 22, pp. 10699-10707 (2006)

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We report the experimental realization of an ultrafast all-optical temporal differentiator. Differentiation is obtained via all-fiber filtering based on a simple diffraction grating-assisted mode coupler (uniform long-period fiber grating) that performs full energy conversion at the optical carrier frequency. Due to its high bandwidth, this device allows processing of arbitrary optical signals with sub-picosecond temporal features (down to 180-fs with the specific realizations reported here). Functionality of this device was tested by differentiating a 700-fs Gaussian optical pulse generated from a fiber laser (@ 1535nm). The derivative of this pulse is an odd-symmetry Hermite-Gaussian waveform, consisting of two linked 500-fs-long, π-phase-shifted temporal lobes. This waveform is noteworthy for its application in advanced ultrahigh-speed optical communication systems.

© 2006 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(200.3050) Optics in computing : Information processing
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Optical Computing

Original Manuscript: September 6, 2006
Revised Manuscript: October 17, 2006
Manuscript Accepted: October 19, 2006
Published: October 30, 2006

Radan Slavík, Yongwoo Park, Mykola Kulishov, Roberto Morandotti, and José Azaña, "Ultrafast all-optical differentiators," Opt. Express 14, 10699-10707 (2006)

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