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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 34, Iss. 20 — Oct. 15, 2009
  • pp: 3116–3118

Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings

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


Optics Letters, Vol. 34, Issue 20, pp. 3116-3118 (2009)
http://dx.doi.org/10.1364/OL.34.003116


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Abstract

We report the fabrication of a π-phase-shifted long-period fiber grating (LPFG) capable of operating as a terahertz-bandwidth second-order temporal differentiator. We demonstrate its operation experimentally by differentiating subpicosecond long optical pulses. A new scheme for achieving high-order photonic temporal differentiation based on LPFG filters is also proposed and demonstrated. In particular, we prepared a LPFG-based first-order differentiator that was frequency and bandwidth matched to the second-order device and demonstrated the cascadability of these devices leading to the implementation of a third-order differentiator. By also employing these devices in reflection, up to the fifth-order differentiation is demonstrated experimentally.

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2340) Fiber optics and optical communications : Fiber optics components
(200.4740) Optics in computing : Optical processing
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Optics in Computing

History
Original Manuscript: July 7, 2009
Revised Manuscript: September 1, 2009
Manuscript Accepted: September 4, 2009
Published: October 7, 2009

Citation
Radan Slavík, Yongwoo Park, Mykola Kulishov, and José Azaña, "Terahertz-bandwidth high-order temporal differentiators based on phase-shifted long-period fiber gratings," Opt. Lett. 34, 3116-3118 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-20-3116


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