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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 27, Iss. 6 — Jun. 1, 2010
  • pp: 1143–1152

Impact of fourth-order dispersion in the modulational instability spectra of wave propagation in glass fibers with saturable nonlinearity

P. Tchofo Dinda and K. Porsezian  »View Author Affiliations


JOSA B, Vol. 27, Issue 6, pp. 1143-1152 (2010)
http://dx.doi.org/10.1364/JOSAB.27.001143


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Abstract

We analyze the modulational instability (MI) of light waves in glass fibers with a local saturable nonlinear refractive index. We identify and discuss the salient features of the effect of the fourth order of the fiber dispersion, in the MI spectra. Particularly, we find that in fibers with negative sign of the second-order dispersion and positive sign of the fourth-order dispersion (FOD), the two existing types of MI processes, called processes of type I, which generate a single pair of sidebands, and processes of type II, which lead to two pairs of sidebands, become highly sensitive to the magnitude of the FOD, both quantitatively and qualitatively. We demonstrate the existence of a critical FOD and two branches of critical pump powers, from which we construct the global map of the MI behaviors in the system, including clear delimitations of the respective domains of the existence of MI processes of types I and II.

© 2010 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 9, 2009
Revised Manuscript: March 9, 2010
Manuscript Accepted: March 12, 2010
Published: May 4, 2010

Citation
P. Tchofo Dinda and K. Porsezian, "Impact of fourth-order dispersion in the modulational instability spectra of wave propagation in glass fibers with saturable nonlinearity," J. Opt. Soc. Am. B 27, 1143-1152 (2010)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-27-6-1143

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