Modulated polarimeters reconstruct polarization information by altering the intensity, recording several measurements, then inverting the instrument's characteristic response. These devices might modulate with time-varying optics, by the introduction of spatial polarization-dependent fringes, through the use of optically thick retarders, or other methods. Recent years have seen many studies concerning the optimal performance of such instruments. In this paper, an attempt is made to present a unifying viewpoing of modulated polarimeters as devices that divide sensor bandwidth in a controlled fashion to reconstruct multiplexed polarization data.
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