Dissipative defect modes in periodic structures

We show that periodic optical lattices imprinted in cubic nonlinear media with strong two-photon absorption and localized linear gain landscapes support stable dissipative defect modes in both focusing and defocusing media. Their shapes and transverse extent are determined by the propagation constan...

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Bibliographic Details
Published in:Optics letters 2010-05, Vol.35 (10), p.1638-1640
Main Authors: KARTASHOV, Yaroslav V, KONOTOP, Vladimir V, VYSLOUKH, Victor A, TORNER, Lluis
Format: Article
Language:English
Subjects:
Comunicacions òptiques
Enginyeria de la telecomunicació
Exact sciences and technology
Fotònica
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optical communications
Optical solitons
nonlinear guided waves
Optics
Photonics
Physics
Telecomunicació òptica
Àrees temàtiques de la UPC
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Summary:We show that periodic optical lattices imprinted in cubic nonlinear media with strong two-photon absorption and localized linear gain landscapes support stable dissipative defect modes in both focusing and defocusing media. Their shapes and transverse extent are determined by the propagation constant that belongs to a gap of the lattice spectrum, which, in turn, is determined by the relation between gain and losses. One-hump and two-hump dissipative defect modes are obtained.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.35.001638