Abstract
| Original language | English |
|---|---|
| Article number | 033824 |
| Number of pages | 4 |
| Journal | Physical Review A |
| Volume | 96 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 12 Sep 2017 |
Fingerprint
Bibliographical note
©2017 American Physical Society.Funding: Australian Research Council and participation in the Erasmus Mundus
NANOPHI project under Contract No. 2013 5659/002-001.
Cite this
}
Guided modes in non-Hermitian optical waveguides. / Turitsyna, Elena; Shadrivov, Ilya; Kivshar, Yuri S.
In: Physical Review A, Vol. 96, No. 3, 033824, 12.09.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Guided modes in non-Hermitian optical waveguides
AU - Turitsyna, Elena
AU - Shadrivov, Ilya
AU - Kivshar, Yuri S.
N1 - ©2017 American Physical Society. Funding: Australian Research Council and participation in the Erasmus Mundus NANOPHI project under Contract No. 2013 5659/002-001.
PY - 2017/9/12
Y1 - 2017/9/12
N2 - We study guided modes in non-Hermitian optical waveguides with dielectric layers having either gain or loss. For the case of a three-layer waveguide, we describe stationary regimes for guided modes when gain and loss compensate each other in the entire structure rather than in each layer. We demonstrate that, by adding a lossless dielectric layer to a double-layer waveguide with the property of parity-time (PT) symmetry, we can control a ratio of gain and loss required to support propagating and nondecaying optical guided modes. This novel feature becomes possible due to the modification of the mode structure, and it can allow using materials with a lower gain to balance losses in various optical waveguiding structures. In addition, we find a non-PT-symmetric regime when all guided modes of the system have their losses perfectly compensated.
AB - We study guided modes in non-Hermitian optical waveguides with dielectric layers having either gain or loss. For the case of a three-layer waveguide, we describe stationary regimes for guided modes when gain and loss compensate each other in the entire structure rather than in each layer. We demonstrate that, by adding a lossless dielectric layer to a double-layer waveguide with the property of parity-time (PT) symmetry, we can control a ratio of gain and loss required to support propagating and nondecaying optical guided modes. This novel feature becomes possible due to the modification of the mode structure, and it can allow using materials with a lower gain to balance losses in various optical waveguiding structures. In addition, we find a non-PT-symmetric regime when all guided modes of the system have their losses perfectly compensated.
UR - http://www.scopus.com/inward/record.url?scp=85029584197&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.96.033824
DO - 10.1103/PhysRevA.96.033824
M3 - Article
AN - SCOPUS:85029584197
VL - 96
JO - Physical Review A
JF - Physical Review A
SN - 1050-2947
IS - 3
M1 - 033824
ER -