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Proceedings Paper

Time-reversal and nonlocal effects in PT-symmetric nonlinear lattices with balanced gain and loss
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Paper Abstract

We reveal a number of fundamentally important effects which underpin the key aspects of light propagation in photonic structures composed of coupled waveguides with loss and gain regions, which are designed as optical analogues of complex parity-time (or PT) symmetric potentials. We identify a generic nature of time-reversals in PT-symmetric optical couplers, which enables flexible control of all-optical switching and a realization of logic operations. We also show that light propagation in PT-symmetric structures can exhibit strongly nonlocal sensitivity to topology of a photonic structure. These results suggest new possibilities for shaping optical beams and pulses compared to conservative structures.

Paper Details

Date Published: 12 September 2011
PDF: 8 pages
Proc. SPIE 8095, Active Photonic Materials IV, 80950N (12 September 2011); doi: 10.1117/12.894528
Show Author Affiliations
Andrey A. Sukhorukov, The Australian National Univ. (Australia)
Zhiyong Xu, The Australian National Univ. (Australia)
Sergey V. Dmitriev, Institute for Metals Superplasticity Problems (Russian Federation)
Sergey V. Suchkov, Institute for Metals Superplasticity Problems (Russian Federation)
Yuri S. Kivshar, The Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 8095:
Active Photonic Materials IV
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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