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Non-Hermitian Optical Waveguide Couplers

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Parity-time Symmetry and Its Applications

Part of the book series: Springer Tracts in Modern Physics ((STMP,volume 280))

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Abstract

We discuss the PT symmetry effects in non-Hermitian waveguiding geometries starting from a classical example of a two-core coupler with gain and loss. We demonstrate that a nonlinear response can break the PT symmetry in a coupler, and discuss the regimes of parametric amplification and nonlocality associated with such systems. Then, we analyse non-Hermitical trimers and also a PT-symmetric system embedded into an array of waveguides. Finally, we demonstrate the existence of nontrivial modes in non-Hermitian waveguiding structures with asymmetric layers of gain and loss.

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Acknowledgements

The authors acknowledge support by the Australian Research Council (ARC), including Discovery Project DP160100619.

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Authors and Affiliations

  1. Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT, Australia

    Sergey V. Suchkov, Andrey A. Sukhorukov & Yuri S. Kivshar

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  1. Sergey V. Suchkov
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  2. Andrey A. Sukhorukov
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  3. Yuri S. Kivshar
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Editors and Affiliations

  1. College of Optics and Photonics, University of Central Florida, Orlando, FL, USA

    Demetrios Christodoulides

  2. Department of Mathematics and Statistics, University of Vermont, Burlington, VT, USA

    Jianke Yang

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Suchkov, S.V., Sukhorukov, A.A., Kivshar, Y.S. (2018). Non-Hermitian Optical Waveguide Couplers. In: Christodoulides, D., Yang, J. (eds) Parity-time Symmetry and Its Applications. Springer Tracts in Modern Physics, vol 280. Springer, Singapore. https://doi.org/10.1007/978-981-13-1247-2_11

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  • DOI: https://doi.org/10.1007/978-981-13-1247-2_11

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