V-Shape Liquid Crystal-Based Retromodulator Air to Ground Optical Communications

Geday, Morten Andreas and Campo, Guillermo del and Carrasco-Casado, A. and Bennis, Noureddine and Quintana Arregui, Patxi Xabier and López Hernández, Francisco and Otón Sánchez, José Manuel (2008). V-Shape Liquid Crystal-Based Retromodulator Air to Ground Optical Communications. "Molecular Crystals and Liquid Crystals", v. 494 ; pp. 213-221. ISSN 1542-1406. https://doi.org/10.1080/15421400802430299.

Description

Title: V-Shape Liquid Crystal-Based Retromodulator Air to Ground Optical Communications
Author/s:
  • Geday, Morten Andreas
  • Campo, Guillermo del
  • Carrasco-Casado, A.
  • Bennis, Noureddine
  • Quintana Arregui, Patxi Xabier
  • López Hernández, Francisco
  • Otón Sánchez, José Manuel
Item Type: Article
Título de Revista/Publicación: Molecular Crystals and Liquid Crystals
Date: 2008
ISSN: 1542-1406
Volume: 494
Subjects:
Freetext Keywords: optical communications; PolSK; retro-modulation; V-shape smectics
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper describes the use of a 2D liquid crystal retro-modulator as a free space, wireless, optical link. The retro-modulator is made up of a retro-reflecting cornercube onto which 2 cascaded V-shape smectics liquid crystal modulators are mounted. The communication link differs with respect to more conventional optical links in not using amplitude (nor frequency) modulation, but instead state-of-polarisation (SOP) modulation known as Polarisation Shift Keying (PolSK). PolSK has the advantage over amplitude modulation, that it is less sensitive to changes in the visibility of the atmosphere, and increases inherently the bandwidth of the link. The implementation of PolSK both in liquid crystal based and in retro-modulated communication are novelties.

More information

Item ID: 2818
DC Identifier: http://oa.upm.es/2818/
OAI Identifier: oai:oa.upm.es:2818
DOI: 10.1080/15421400802430299
Official URL: http://www.tandf.co.uk/journals/titles/1058725x.html
Deposited by: Memoria Investigacion
Deposited on: 22 Apr 2010 10:57
Last Modified: 20 Apr 2016 12:28
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