Abstract.
Mode splitting was observed when a He-Ne laser beam was reflected through a prism-coupled liquid-crystal slab waveguide under an applied electric field. The splitting manifests itself as the imposed voltage reaches a critical level, and diminishes when the voltage increases above a critical high value. If the applied voltage increases even further, mode splitting vanishes, attributing to the result that almost all the directors of the liquid crystal turn upright to the surface. The multi-layer matrix simulation can satisfactorily account for this phenomenon by exploiting the property of the anisotropic optical birefringence of a liquid crystal under applied voltages.
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Received: 2 December 2002 / Revised version: 24 January 2003 / Published online: 23 May 2003
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Lin, TS., Lue, JT. Mode splitting in an optical slab waveguide filled with nematic liquid crystals . Appl Phys B 76, 561–567 (2003). https://doi.org/10.1007/s00340-003-1130-x
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DOI: https://doi.org/10.1007/s00340-003-1130-x