Answers are grounded in this paper and cite their sources.
We have developed thin liquid crystal (LC) arrays for use as simple polarization-controller arrays on planar lightwave circuits (PLCs). The 30-μm thick LC arrays are vertically inserted into trenches cut across PLC substrates. Two such LC cells that are in line and parallel to each other, one of which has a direction of alignment that is rotated by 45/spl deg/ relative to that of the other, are able to convert an arbitrary input polarization to a desired one. Twisted-nematic LC cells can switch the polarization of input light between the TE and TM modes with an extinction ratio of 15 dB.
No takes yet. Share an insight, caveat, or question.
Hirabayashi et al. (2002) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: