Spontaneous symmetry breaking in a double-defect nonlinear grating

C. Martijn de Sterke, Irina V. Kabakova, Ishraq Uddin, Jonathan Jeyaratnam, and Boris A. Malomed

Phys. Rev. A 88, 033825 – Published 13 September 2013

Abstract

We study spontaneous symmetry breaking in localized modes trapped by a pair of defects embedded in a Bragg grating written in a Kerr-nonlinear material. While the system has two symmetric modes at low energies, the nonlinearity renders one of these unstable in favor of an asymmetric mode emerging at sufficiently high energies. Using a simple semianalytic model, we explain this transition as originating from the degeneracy between a state in a grating with two defects and state in a grating with a single defect.

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Received 23 June 2013

DOI:https://doi.org/10.1103/PhysRevA.88.033825

Authors & Affiliations

C. Martijn de Sterke¹, Irina V. Kabakova¹, Ishraq Uddin¹, Jonathan Jeyaratnam¹, and Boris A. Malomed²

¹Center for Ultrahigh Bandwidth Devices for Optical Systems (CUDOS) and Institute of Photonics and Optical Sciences (IPOS), School of Physics, University of Sydney, NSW, 2006, Australia
²Department of Physical Electronics, School of Electrical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel

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Vol. 88, Iss. 3 — September 2013

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