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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 2 — Jan. 19, 2009
  • pp: 461–471

First-order loss-less differentiators using long period gratings made in Er-doped fibers

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


Optics Express, Vol. 17, Issue 2, pp. 461-471 (2009)
http://dx.doi.org/10.1364/OE.17.000461


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Abstract

An active-fiber-based all-optical first-order temporal differentiator with power efficiency surpassing 100% is demonstrated experimentally. It is based on a long-period fiber grating (LPFG) inscribed into a piece of highly-doped Erbium-doped fiber (EDF). The performed theoretical analysis considers effects like relative position of the LPFG with respect to the input end of the EDF and influence of the input signal power. In the design, parameters like noise characteristics and level of non-linear interaction are taken into account. The advantages of such an implementation over the setup using concatenation of a passive LPFG with an amplifier lies in reducing the unwanted nonlinearities and reducing the amplified spontaneous emission (ASE).

© 2009 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2410) Fiber optics and optical communications : Fibers, erbium
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(200.4740) Optics in computing : Optical processing

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 10, 2008
Revised Manuscript: December 22, 2008
Manuscript Accepted: December 30, 2008
Published: January 6, 2009

Citation
David Krcmarík, Radan Slavík, Yongwoo Park, Mykola Kulishov, and José Azaña, "First-order loss-less differentiators using long period gratings made in Er-doped fibers," Opt. Express 17, 461-471 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-2-461


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