Kominis Y, Bountis T, Flach S. The Asymmetric Active Coupler: Stable Nonlinear Supermodes and Directed Transport.
Sci Rep 2016;
6:33699. [PMID:
27640818 PMCID:
PMC5027391 DOI:
10.1038/srep33699]
[Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 08/25/2016] [Indexed: 11/30/2022] Open
Abstract
We consider the asymmetric active coupler (AAC) consisting of two coupled dissimilar waveguides with gain and loss. We show that under generic conditions, not restricted by parity-time symmetry, there exist finite-power, constant-intensity nonlinear supermodes (NS), resulting from the balance between gain, loss, nonlinearity, coupling and dissimilarity. The system is shown to possess non-reciprocal dynamics enabling directed power transport functionality.
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