Figure 4: Real part (a), imaginary part (b), magnitude (c) and phase (d) of the complex scattering amplitude.
From: Realizing total reciprocity violation in the phase for photon scattering

The figure displays the range of the m = −1 order stroboscopic resonance; dots are experimental signals and continuous lines are theory simulations. The agreement between direct (red) and reciprocal (blue) data visible in (c) demonstrates magnitude reciprocity, while (d) shows maximal reciprocity violation in the phase (red and blue curves running with a 180° phase difference).