Multiwave Shearing Interferometer Simulation?
As we got a shearing interferometer simulator that overlaps two displayed copies of a field, tiltet with respect to each other, generalizing the algorithm to multi wave lateral shearing interferometry (MWLSI) wouldn't be a big deal! The principle stays the same, just so more than two copies are overlaped and the tilt/displacement follows a radial symmetry with N copies. This natually includes the interferogram produced by the SID4 (PHASIX) sensor. Having this implemented would be a first step towards implementing the evaluation of corresponding data.
The only thing that does not generalize that I see is that the tilt and displacement for MWLSI are described by the initial relative tilt of the dublicates and the distance of the observation plane to the plane where the dublicates are generated, while for the regular shearplate the thickness and wedge of the glass are used. Those are of course only a matter of how the user enters the properties of the simulated interferogram. I guess having a parent "Shearing Interferometer Simulater" and to children "Shearplate Simulator" and "Multiwave Lateral Shearing Interferometry Simulator" (or a more catchy name) that take different inputs would be a valid approach ...
Original Three Wave LSI: https://www.researchgate.net/publication/46381969_Three-wave_lateral_shearing_interferometer MWLSI: https://doi.org/10.1117/12.681533