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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 12 — Jun. 6, 2011
  • pp: 11457–11462

Defect solitons in parity-time symmetric superlattices

Zhien Lu and Zhi-Ming Zhang  »View Author Affiliations

Optics Express, Vol. 19, Issue 12, pp. 11457-11462 (2011)

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We study defect solitons (DSs) in a parity-time (PT) symmetric superlattice with focusing Kerr nonlinearity. The properties of the DSs with a PT symmetrical potential are obviously different from those in a superlattice with a real refractive index. Unusual features stemming from PT symmetry can be found. Research results show that the solitons with a zero defect or a positive defect can exist and stably propagate in the semi-infinite gap, but they cannot exist in the first gap. For the case of a negative defect, the soliton can stably exist in both the semi-infinite gap and the first gap.

© 2011 OSA

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons

ToC Category:
Nonlinear Optics

Original Manuscript: April 11, 2011
Revised Manuscript: May 7, 2011
Manuscript Accepted: May 7, 2011
Published: May 27, 2011

Zhien Lu and Zhi-Ming Zhang, "Defect solitons in parity-time symmetric superlattices," Opt. Express 19, 11457-11462 (2011)

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