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 journalArticlepeer-review

    52 Citations (Scopus)


    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 languageEnglish
    Pages (from-to)2148-2150
    Number of pages3
    JournalOptics Letters
    Issue number11
    Publication statusPublished - 1 Jun 2012


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