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Optics Letters

Optics Letters


  • Vol. 18, Iss. 19 — Oct. 1, 1993
  • pp: 1612–1614

Spatial gap solitons in periodic nonlinear structures

R. F. Nabiev, P. Yeh, and D. Botez  »View Author Affiliations

Optics Letters, Vol. 18, Issue 19, pp. 1612-1614 (1993)

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Self-focusing effects in periodic leaky-wave coupled (antiguided) and evanescent-wave coupled array structures are analyzed for what is to our knowledge the first time. The results obtained can be explained in terms of spatial gap solitons. For infinite-extent arrays of antiguides it is found that (for interelement-spacing values), below the in-phase-mode resonance, self-focusing occurs with increasing light intensity even when the medium is intrinsically self-defocusing (i.e., negative nonlinearity). If the medium has positive nonlinearity the analysis shows that antiguided arrays possess either self-focusing or self-defocusing properties depending on the parameters of the structure, whereas evanescent-wave in-phase coupled arrays always have self-focusing properties.

© 1993 Optical Society of America

Original Manuscript: April 26, 1993
Published: October 1, 1993

R. F. Nabiev, D. Botez, and P. Yeh, "Spatial gap solitons in periodic nonlinear structures," Opt. Lett. 18, 1612-1614 (1993)

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