Signal manipulation with a PT-symmetric coupler embedded into an ar-ray of optical waveguides

S.V. Suchkov; D.I. Borisov; A.A. Sukhorukov; Y.S. Kivshar

doi:10.22226/2410-3535-2014-4-222-225

We study the scattering of linear waves in a long waveguide array with a parity-time (PT)-symmetric defect created by two waveguides with balanced gain and loss. We present exact solutions for the scattering of linear waves on such a defect. We reveal that the reflected and transmitted linear waves can be amplified substantially after interaction with the PT-symmetric defect thus allowing an active control of the wave propagating through the array

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Signal manipulation with a PT-symmetric coupler embedded into an ar-ray of optical waveguides

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