http://www.cnr.it/ontology/cnr/individuo/prodotto/ID266586

All Optical Tunable Nematic Liquid Crystal Waveguide (Articolo in rivista)

Type

Label

All Optical Tunable Nematic Liquid Crystal Waveguide (Articolo in rivista) (literal)

Anno

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Alternative label

Trotta, M. and Asquini, R. and d'Alessandro, A. and Beccherelli, R. (2012)
All Optical Tunable Nematic Liquid Crystal Waveguide
in Molecular crystals and liquid crystals (Phila. Pa. : 2003)
(literal)

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Pagina inizio

Pagina fine

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http://www.tandfonline.com/doi/abs/10.1080/15421406.2011.654189#.UmwTvJF1PbE (literal)

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Note

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1 Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome Via Eudossiana, 18 00184 Rome - Italy 2 Consiglio Nazionale delle Ricerche - Istituto per la Microelettronica e Microsistemi Via del Fosso del Cavaliere, 100 - 00133 Rome - Italy (literal)

Titolo

Abstract

In this paper we theoretically investigate the nonlinear behaviour of a rectangular liquid crystal waveguide. An optical beam of a C-Band laser, fiber coupled to the waveguide, modulates the refractive index of the liquid crystal core. Light propagation is obtained when the effective refractive index of the core exceed the cladding refractive index one. The cut-off condition can be determined by the initial alignment of the liquid crystal molecules and by the laser beam itself that excites optical nonlinearity due to optically induced reorientational effect. Low power optical control could be obtained with an optimization of the molecular alignment. (literal)

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