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Proceedings Paper

Reshaping of the refractive index profile of a liquid crystal waveguide by means of an external electric field
Author(s): Roberta Ramponi; Roberto Osellame; Marco Marangoni; Marco Buscaglia; Tommaso Bellini
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Paper 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.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.525546
Show Author Affiliations
Roberta Ramponi, Politecnico di Milano (Italy)
Roberto Osellame, Politecnico di Milano (Italy)
Marco Marangoni, Politecnico di Milano (Italy)
Marco Buscaglia, Univ. degli Studi di Milano (Italy)
Tommaso Bellini, Univ. degli Studi di Milano (Italy)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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