Main Question or Discussion Point
If a PBS (polarizing beam splitter/polarization analyzer) that emits horizontal and vertical polarized photons when observed has a horizontal polarized lens pasted over the horizontal outlet and vertical one over the vertical outlet does this change its behavior? I'm particularly concerned when the PBS is used with another to make an interferometer. If two PBS's are put back to back and a 45° photon is shot in a 45° comes out (interference). Is it still true for the case when the 1st one has the pasted lenses?