Noise-free simulation of iMZ response for a monochromatic (1000 nm) and broadband (800–1200 nm uniformly cut into 11 intervals 40 nm wide) light source, for an input aberration of 250 nm RMS (top left). The flux is 10 photons/pixel for each spectral interval (hence 11 times more photons in total for the broadband source compared to the monochromatic one). The interferograms’ intensities are displayed as a percentage of the incident flux. Top left: random incident wavefront phase produced by the DM actuators. Top right: interferograms obtained for each iMZ output (symmetrical in blue, asymmetrical in orange), monochromatic (solid line) and polychromatic (dotted line). Bottom: vertical section through the pupil diameter of the four interferograms. The visibility was calculated as V = (I_max - I_min)/(I_max + I_min), with I_min and I_max the minimal and maximal intensities measured in the image of the pupil.