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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 5 — May. 1, 2013
  • pp: 1382–1391

Impact of input profile, absorption coefficients, and chirp on modulational instability of femtosecond pulses in silicon waveguides under fourth-order dispersion

Lucien Mandeng Mandeng and Clément Tchawoua  »View Author Affiliations


JOSA B, Vol. 30, Issue 5, pp. 1382-1391 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001382


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Abstract

We report the modulational instability (MI) analysis in silicon-on-insulator waveguides under fourth-order dispersion. The two-photon absorption (TPA) generates four symmetric optimum frequencies in the MI gain spectrum. The free-carrier absorption is found to enhance the value of the central MI gain. The chirp amplifies the intensity of the main pulse train peaks, leading to input profile independence. It shifts the occurrence of these peaks at short propagation distances. The absorption coefficients counteract the chirp, creating a pump dependence, and the high values of TPA destroy drastically the spontaneous breakup mechanism, leading to pump depletion.

© 2013 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(190.4180) Nonlinear optics : Multiphoton processes
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 20, 2012
Revised Manuscript: March 4, 2013
Manuscript Accepted: April 1, 2013
Published: May 1, 2013

Citation
Lucien Mandeng Mandeng and Clément Tchawoua, "Impact of input profile, absorption coefficients, and chirp on modulational instability of femtosecond pulses in silicon waveguides under fourth-order dispersion," J. Opt. Soc. Am. B 30, 1382-1391 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-5-1382

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