Fig. 4: Transmission calibration.
From: Non-linear coherent perfect absorption in the proximity of exceptional points
Transmission intensities \(| {S}_{21}^{(cal)}{| }^{2}\) and \(| {S}_{31}^{(cal)}{| }^{2}\) where the non-linear system has been replaced by open and short terminations at the two antennas, respectively.
