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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 11 — May. 26, 2008
  • pp: 7767–7777

Gap solitons in grating superstructures

Thawatchai Mayteevarunyoo and Boris A. Malomed  »View Author Affiliations

Optics Express, Vol. 16, Issue 11, pp. 7767-7777 (2008)

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We report results of the investigation of gap solitons (GSs) in the generic model of a periodically modulated Bragg grating (BG), which includes periodic modulation of the BG chirp or local refractive index, and periodic variation of the local reflectivity. We demonstrate that, while the previously studied reflectivity modulation strongly destabilizes all solitons, the periodic chirp modulation, which is a novel feature, stabilizes a new family of double-peak fundamental BGs in the side bandgap at negative frequencies (gap No. -1), and keeps solitons stable in the central bandgap (No. 0). The two soliton families demonstrate bistability, coexisting at equal values of energy. In addition, stable 4-peak bound states are formed by pairs of fundamental GSs in bandgap -1. Self-trapping and mobility of the solitons are studied too.

© 2008 Optical Society of America

OCIS Codes
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(230.1480) Optical devices : Bragg reflectors

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 31, 2008
Revised Manuscript: May 7, 2008
Manuscript Accepted: May 12, 2008
Published: May 14, 2008

Thawatchai Mayteevarunyoo and Boris A. Malomed, "Gap solitons in grating superstructures," Opt. Express 16, 7767-7777 (2008)

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