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(Color online) Schematic layout of the twisted cut-wire pair. The two cut-wires locate on the plane z = –s/2 and z = s/2, respectively, with a twist angle between them. We set their central points lying on the z axis. The impinging wave propagates in the z direction.
(Color online) Normalized amplitudes and phases of and under different twist angle . (a) and (b) , (c) and (d) , and (e) and (f) . The results from our analytical model (an.) and numerical simulation (nu.) are plotted in (—) and (), respectively. The black dotted line in the phase diagrams are the phase differences between and calculated with analytical model.
(Color online) Amplitudes and phases of the electric field of forward radiated wave in positive z direction, under different twist angles. (a) and (b) , (c) and (d) , (e) and (f) . The results from analytical model (an.) and numerical simulation (nu.) are plotted in (—) and (), respectively.
(Color online) Polarization rotation angle as a function of frequency and twist angle . (a) For the scattered wave when cut-wire 1 is oriented along y direction; (b) for the averaged scattered wave when cut-wire 1 is oriented along x and y directions. The optimum twist angles for different frequencies are shown by the magenta dots, and the red circle denotes the position with maximum polarization rotation.
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