Wave scattering on a domain wall in a chain of PT-symmetric couplers
We study wave propagation in linear arrays composed of pairs of conjugate waveguides with balanced gain and loss, that is, arrays of PT-symmetric couplers, where the linear spectrum is known to feature high-frequency and low-frequency branches. We introduce a domain wall by switching the gain and loss in half of the array and analyze the scattering of linear waves on this defect. The analysis reveals two major effects: amplification of both reflected and transmitted waves and excitation of the...[Show more]
|Collections||ANU Research Publications|
|Source:||Physical Review A: Atomic, Molecular and Optical Physics|
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