Polarization scrambling is also used on long-distance fibre optic transmission systems with optical amplifiers, in order to avoid polarization hole-burning.
Polarization scrambling, also for the variation of polarization mode dispersion, is a mandatory test procedure for fiber optic data transmission systems based on polarization-division multiplexing.
They are commercially available with speeds of 20 Mrad/s on the Poincaré sphere (see external link).
[1] Some experiments have implemented ultrafast polarization scrambling on a polaritonic platform with speeds in the order of the Trad/s on the Poincaré sphere.
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