Edge modes of 2D photonic crystals with and without PT symmetry
(Conference Presentation)

Xiang Ni; Alexander B. Khanikaev; Alexander A. Lisyansky

doi:10.1117/12.2238219

7 November 2016 Edge modes of 2D photonic crystals with and without PT symmetry (Conference Presentation)

Xiang Ni, Alexander B. Khanikaev, Alexander A. Lisyansky

Proceedings Volume 9919, Nanophotonic Materials XIII; 99190B (2016) https://doi.org/10.1117/12.2238219
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Bulk spectrum and edge modes of 2D photonic crystals with parity and time-reversal symmetries broken in a different way are investigated. It is shown that for specific values of parameter of the symmetry reduction the bulk modes exhibit a peculiar one-way Dirac-like dispersion. The domain wall formed by two crystals with the symmetry reduction parameter reversed is shown to exhibit an edge mode which coexists with the one-way bulk Dirac regime. In addition, we demonstrate that parity-time symmetric interfaces between photonic crystals with gain and loss support a new class of dissipation-less surface modes.

Conference Presentation

Citation Download Citation

Xiang Ni, Alexander B. Khanikaev, and Alexander A. Lisyansky "Edge modes of 2D photonic crystals with and without PT symmetry (Conference Presentation)", Proc. SPIE 9919, Nanophotonic Materials XIII, 99190B (7 November 2016); https://doi.org/10.1117/12.2238219

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