  In this article we demonstrate that a grating fabricated through nanoscale
volumetric crosslinking of a liquid crystalline polymer enables remote
polarization control over the diffracted channels. This functionality is a
consequence of the responsivity of liquid crystal networks upon light stimuli.
Tuning the photonic response of the device is obtained thanks to both a
refractive index and a shape change of the grating elements induced by a
molecular rearrangement under irradiation. In particular, the material
anisotropy allows for nontrivial polarization state management over multiple
beams. Absence of any liquid component and a time response down to 0.2
milliseconds make our device appealing in the fields of polarimetry and optical
communications.
