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Proceedings Paper

Liquid crystal display as an optoelectronic demultiplexer
Author(s): F. J. Rivera-López; E. Tepichín-Rodríguez; G. Ramírez-Zavaleta; A. A. Olivera-Ramírez; J. G. Suárez-Romero
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Paper Abstract

In this work we design and build an optoelectronic demultiplexer to distribute audio and video signals transmitted through an optical carrier toward different users using a liquid crystal display (LCD) as a router. The output plane of our proposed device is located within the Fresnel Diffraction regime. With this feature we obtain a simultaneous distribution, high-speed of processing, easiness of path reconfigurations and a high density of interconnections. The optical carrier modulation includes a Frequency Shift Keying signal (FSK) to indicate the interconnection path. This last control signal is manipulated with a personal computer. We present some preliminary results of the feasibility of our proposal.

Paper Details

Date Published: 6 October 2005
PDF: 8 pages
Proc. SPIE 5947, Liquid Crystals: Optics and Applications, 594714 (6 October 2005); doi: 10.1117/12.625213
Show Author Affiliations
F. J. Rivera-López, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Univ. Tecnológica de la Mixteca (Mexico)
E. Tepichín-Rodríguez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
G. Ramírez-Zavaleta, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
A. A. Olivera-Ramírez, Univ. Tecnológica de la Mixteca (Mexico)
J. G. Suárez-Romero, Instituto Tecnológico de Querétaro (Mexico)

Published in SPIE Proceedings Vol. 5947:
Liquid Crystals: Optics and Applications
Tomasz R. Wolinski; Marc Warenghem; Shin-Tson Wu, Editor(s)

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