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Abstract |
This talk will focus on numerical solutions of the parity-time- (PT-) symmetric Schrödinger equations, especially optical couplers with different nonlinearities. For each configuration, we develop a dynamical model and examine its PT-symmetry. The corresponding nonlinear modes, as well as so-called ghost states that bifurcate from them, are analyzed starting from the Hamiltonian limit. Once the relevant waveforms have been identified (in an analytical or numerical form), their stability is examined by means of linearization in the vicinity of stationary points. |
