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Sergej Flach
복잡계 이론물리 연구단
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Stability through asymmetry: Modulationally stable nonlinear supermodes of asymmetric non-Hermitian optical couplers

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Title
Stability through asymmetry: Modulationally stable nonlinear supermodes of asymmetric non-Hermitian optical couplers
Author(s)
Yannis Kominis; Tassos Bountis; Sergej Flach
Publication Date
2017-06
Journal
PHYSICAL REVIEW A, v.95, no.6, pp.063832 -
Publisher
AMER PHYSICAL SOCAmerican Physical Society
Abstract
We analyze the stability of a non-Hermitian coupler with respect to modulational inhomogeneous perturbations in the presence of unbalanced gain and loss. At the parity-time (PT ) symmetry point the coupler is unstable. Suitable symmetry breakings lead to an asymmetric coupler, which hosts nonlinear supermodes. A subset of these broken symmetry cases finally yields nonlinear supermodes which are stable against modulational perturbations. The lack of symmetry requirements is expected to facilitate experimental implementations and relevant photonics applications. ©2017 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/3681
ISSN
2469-9926
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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