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Ctyroký J, Kuzmiak V, Eyderman S. Waveguide structures with antisymmetric gain/loss profile. Opt Express. 2010;18(21):21585-93doi: 10.1364/OE.18.021585.
Ctyroký, J., Kuzmiak, V., & Eyderman, S. (2010). Waveguide structures with antisymmetric gain/loss profile. Optics express, 18(21), 21585-93. https://doi.org/10.1364/OE.18.021585
Ctyroký, Jiří, et al. "Waveguide structures with antisymmetric gain/loss profile." Optics express vol. 18,21 (2010): 21585-93. doi: https://doi.org/10.1364/OE.18.021585
Ctyroký J, Kuzmiak V, Eyderman S. Waveguide structures with antisymmetric gain/loss profile. Opt Express. 2010 Oct 11;18(21):21585-93. doi: 10.1364/OE.18.021585. PMID: 20941056.
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Opt Express. 2010 Oct 11;18(21):21585-93. doi: 10.1364/OE.18.021585.

Waveguide structures with antisymmetric gain/loss profile.

Optics express

Jiří Ctyroký, Vladimír Kuzmiak, Sergey Eyderman

Affiliations

  1. Institute of Photonics and Electronics AS CR, vvi, Chaberská 57, 18251 Prague 8, Czech Republic. [email protected]

PMID: 20941056 DOI: 10.1364/OE.18.021585

Abstract

Waveguide structures with an antisymmetric gain/loss profile were studied more than a decade ago as benchmark tests for beam propagation methods. These structures attracted renewed interest, recently e.g. as photonic analogues of quantum mechanical structures with parity-time symmetry breaking. In this paper, properties of both weakly and strongly guiding two-mode waveguides and directional couplers with balanced loss and gain are described. Rather unusual power transmission in such structures is demonstrated by using numerical methods. We found that the interface between media with balanced loss and gain supports propagation of confined unattenuated TM polarized surface wave and we have shown that its properties are consistent with the prediction of a simple analytical model.

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