Surface waves at the interface with an antisymmetric gain/loss profile

0356165 - ÚFE 2012 RIV US eng C - Conference Paper (international conference)
Čtyroký, Jiří - Kuzmiak, Vladimír - Eyderman, Sergey
Surface waves at the interface with an antisymmetric gain/loss profile.
AIP Conference Proceedings. Vol. 1291. Melville: AIP, 2010 - (Chigrin, D.), s. 40-42. ISBN 978-0-7354-0846-3. ISSN 0094-243X.
[THE THIRD INTERNATIONAL WORKSHOP ON THEORETICAL AND COMPUTATIONAL NANO-PHOTONICS (TACONA-PHOTONICS 2010). Bad Honef (DE), 03.11.2010-05.11.2010]
R&D Projects: GA ČR(CZ) GAP205/10/0046
Institutional research plan: CEZ:AV0Z20670512
Keywords : optical fwaveguides * symmetry breaking * intergated optics
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

We studied properties of strongly guiding two-mode waveguides with antisymmetric gain/loss profile which constitute photonic analogues of quantum mechanical structures with parity-time symmetry breaking. For both TE and TM polarizations, the dependences of effective indices of the guided modes vs. gain/loss coefficient exhibit a degenerate critical point that defines two regimes with profoundly different behavior. In addition, we have shown that the interface between the two media supports propagation of a strongly confined non-attenuated TM polarized surface wave. We examined the properties of the surface wave obtained by both the modal and FDTD method and discuss the differences between the results obtained by both techniques as both the material and geometrical parameters are varied.
Permanent Link: http://hdl.handle.net/11104/0194759