A variational solution to solitons in parity-time symmetric optical lattices
Department of Physics, Guangdong University of Petrochemical Technology, 525000, Maoming, China
2 Laboratory of Photonic Information Technology, South China Normal University, 510631, Guangzhou, China
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Accepted: 25 June 2017
Published online: 1 September 2017
A variational technique is established to study the fundamental solitons in parity-time symmetric optical lattices. The variational results show that the fundamental solitons can exist in the semi-infinite gap. The variational method can be fit for the solitons whose real part of field is symmetrical or antisymmetrical. Following numerical simulations, the variational results are in good agreement with the numerical results.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, 2017