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  • Title: Integrated-optic polarization controllers incorporating polymer waveguide birefringence modulators.
    Author: Kim JW, Park SH, Chu WS, Oh MC.
    Journal: Opt Express; 2012 May 21; 20(11):12443-8. PubMed ID: 22714231.
    Abstract:
    Polarization controllers based on polymer waveguide technology are demonstrated by incorporating thermo-optic birefringence modulators (BMs) and thin-film wave plates. Highly birefringent polymer materials are used to increase the efficiency of birefringence modulation in proportion to the heating power. Thin-film quarter-wave plates are fabricated by using a crosslinkable liquid crystal, reactive mesogen, and inserted between the BMs to produce static phase retardation and polarization coupling. By applying a triangular AC signal to one BM and a DC signal to another, the polarization states of the output light are modulated to cover the entire surface of the Poincaré sphere.
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