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

0356165 - ÚFE 2012 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
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]
Grant CEP: GA ČR(CZ) GAP205/10/0046
Výzkumný záměr: CEZ:AV0Z20670512
Klíčová slova: optical fwaveguides * symmetry breaking * intergated optics
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

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.
Trvalý link: http://hdl.handle.net/11104/0194759