Eur. Phys. J. D (2015) 69: 199
https://doi.org/10.1140/epjd/e2015-60034-7

Regular Article

Nonlinear parity-time symmetric closed-form optical quadrimer waveguides: attractor perspective

Department of Physics, Indian Institute of Technology Guwahati, 781 039 Guwahati, Assam, India

^a e-mail: aksarma@iitg.ernet.in

Received: 19 January 2015
Received in final form: 30 June 2015
Published online: 18 August 2015

Abstract

We report a study on a closed-form nonlinear parity-time symmetric optical quadrimer waveguides system with a specific coupling scheme. The system yields power saturation behavior in the modes, which may be attributed to the inherent attractor in the system. A detailed analysis has been provided to confirm the attractor aspect of the system. This work also addresses a crucial issue regarding choice of initial conditions while carrying out numerical simulation for such systems.