Reshaping of the refractive index profile of a liquid crystal waveguide by means of an external electric field

Roberta Ramponi; Roberto Osellame; Marco Marangoni; Marco Buscaglia; Tommaso Bellini

doi:10.1117/12.525546

19 November 2003 Reshaping of the refractive index profile of a liquid crystal waveguide by means of an external electric field

Roberta Ramponi, Roberto Osellame, Marco Marangoni, Marco Buscaglia, Tommaso Bellini

Author Affiliations +

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.525546
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

Graded index planar waveguides have been realized by using a nematic liquid crystal in a distorted hybrid configuration. The application of external electric fields enables to modify the orientation of the local molecular axis and hence to reshape in an easy and controlled way the refractive index profile. The waveguide, characterized for various electric field strengths by means of m-lines spectroscopy, behaves in good agreement with what expected from a simple model based on the dielectric, optical and elastic properties of the liquid crystal.

Citation Download Citation

Roberta Ramponi, Roberto Osellame, Marco Marangoni, Marco Buscaglia, and Tommaso Bellini "Reshaping of the refractive index profile of a liquid crystal waveguide by means of an external electric field", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.525546

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