http://www.cnr.it/ontology/cnr/individuo/prodotto/ID260510

All-optical liquid crystal waveguide on silicon (Articolo in rivista)

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Trotta, M.; Asquini, R; D'Alessandro, A.; , Beccherelli, R. (2011)
All-optical liquid crystal waveguide on silicon
in Molecular crystals and liquid crystals (Phila. Pa. : 2003)
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http://www.tandfonline.com/doi/abs/10.1080/15421406.2011.581153#.Ui9UFBa_1lE (literal)

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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 100, 00133 Rome, Italy (literal)

Titolo

Abstract

In this paper we demonstrate nonlinear optical properties of a channel waveguide made of E7 nematic liquid crystal infiltrated in a SiO2/Si V-groove. Light in C-Band (1530-1565 nm), fiber coupled to the core of the liquid crystal waveguide, was optically modulated by the optical beam itself, with a power below 25 mW. A bias voltage was applied to induce a liquid crystal orientation over the Freedericksz threshold and a further director reorientation was obtained by increasing the optical beam. The effect of optical modulation for different applied voltages obtained experimentally was modelled including both opto and electro-optical effects. Copyright © Taylor & Francis Group, LLC. (literal)

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