Nonlocality in PT -symmetric waveguide arrays with gain and loss

Andrey A. Sukhorukov; Sergey V. Dmitriev; Sergey V. Suchkov; Yuri S. Kivshar

doi:10.1364/OL.37.002148

Nonlocality in PT -symmetric waveguide arrays with gain and loss

Andrey A. Sukhorukov^*, Sergey V. Dmitriev, Sergey V. Suchkov, Yuri S. Kivshar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

We demonstrate that light propagation in waveguide arrays that include PT -symmetric structures can exhibit strongly nonlocal sensitivity to topology of the array at fixed other parameters. We consider an array composed of lossless waveguides, that includes a pair of PT -symmetric waveguides with balanced gain and loss, and reveal that PT -symmetry breaking thresholds are different for planar and circular array configurations. These results demonstrate that PT -symmetric structures can offer new regimes for optical beam shaping compared to conservative structures.

Original language	English
Pages (from-to)	2148-2150
Number of pages	3
Journal	Optics Letters
Volume	37
Issue number	11
DOIs	https://doi.org/10.1364/OL.37.002148
Publication status	Published - 1 Jun 2012

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10.1364/OL.37.002148

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AB - We demonstrate that light propagation in waveguide arrays that include PT -symmetric structures can exhibit strongly nonlocal sensitivity to topology of the array at fixed other parameters. We consider an array composed of lossless waveguides, that includes a pair of PT -symmetric waveguides with balanced gain and loss, and reveal that PT -symmetry breaking thresholds are different for planar and circular array configurations. These results demonstrate that PT -symmetric structures can offer new regimes for optical beam shaping compared to conservative structures.

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Nonlocality in PT -symmetric waveguide arrays with gain and loss

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