Design and testing of a graded-index liquid crystal optical deflector

Optical deflectors have been used in a wide range of applications, from marking applications to optical links.Some of them are based on micro-electromechanical systems, now a growing market. Another group of deflectors is founded on acousto-optic principle, in which there is a change of a material&#...

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Bibliographic Details
Author: Crespo Fernández, Luis
Format: master thesis
Publication Date:2009
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2099.1/21365
Online Access:https://hdl.handle.net/2099.1/21365
Access Level:Open access
Keyword:Liquid crystals
Cristalls líquids
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
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spelling Design and testing of a graded-index liquid crystal optical deflectorCrespo Fernández, LuisLiquid crystalsCristalls líquidsÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::FotònicaOptical deflectors have been used in a wide range of applications, from marking applications to optical links.Some of them are based on micro-electromechanical systems, now a growing market. Another group of deflectors is founded on acousto-optic principle, in which there is a change of a material's permittivity due to a mechanical wave. Other deviators are based on an optical phased-array or rely on magneto-optic or electro-optic properties of some materials. Usually, deviators without mechanics have a narrow angular range. We present a new electro-optical deflector device based on electro-optical properties of liquid crystal in which a graded-index is induced by the voltage applied in three electrodes. This system permits to scan a wide angular range without mechanical elements. First we will study the basics of the deflector; later on we will focus on the simulation of the deviator and the properties of the device. Finally, we will show the experimental results through the first deflector prototype.Universitat Politècnica de CatalunyaRodríguez Gomez, Alejandro20092009-07-2020142014-05-12master thesishttp://purl.org/coar/resource_type/c_bdccNAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/masterThesisapplication/pdfhttps://hdl.handle.net/2099.1/21365reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2099.1/213652026-05-27T15:37:01Z
dc.title.none.fl_str_mv Design and testing of a graded-index liquid crystal optical deflector
title Design and testing of a graded-index liquid crystal optical deflector
spellingShingle Design and testing of a graded-index liquid crystal optical deflector
Crespo Fernández, Luis
Liquid crystals
Cristalls líquids
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
title_short Design and testing of a graded-index liquid crystal optical deflector
title_full Design and testing of a graded-index liquid crystal optical deflector
title_fullStr Design and testing of a graded-index liquid crystal optical deflector
title_full_unstemmed Design and testing of a graded-index liquid crystal optical deflector
title_sort Design and testing of a graded-index liquid crystal optical deflector
dc.creator.none.fl_str_mv Crespo Fernández, Luis
author Crespo Fernández, Luis
author_facet Crespo Fernández, Luis
author_role author
dc.contributor.none.fl_str_mv Rodríguez Gomez, Alejandro
dc.subject.none.fl_str_mv Liquid crystals
Cristalls líquids
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
topic Liquid crystals
Cristalls líquids
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica
description Optical deflectors have been used in a wide range of applications, from marking applications to optical links.Some of them are based on micro-electromechanical systems, now a growing market. Another group of deflectors is founded on acousto-optic principle, in which there is a change of a material's permittivity due to a mechanical wave. Other deviators are based on an optical phased-array or rely on magneto-optic or electro-optic properties of some materials. Usually, deviators without mechanics have a narrow angular range. We present a new electro-optical deflector device based on electro-optical properties of liquid crystal in which a graded-index is induced by the voltage applied in three electrodes. This system permits to scan a wide angular range without mechanical elements. First we will study the basics of the deflector; later on we will focus on the simulation of the deviator and the properties of the device. Finally, we will show the experimental results through the first deflector prototype.
publishDate 2009
dc.date.none.fl_str_mv 2009
2009-07-20
2014
2014-05-12
dc.type.none.fl_str_mv master thesis
http://purl.org/coar/resource_type/c_bdcc
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
dc.identifier.none.fl_str_mv https://hdl.handle.net/2099.1/21365
url https://hdl.handle.net/2099.1/21365
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universitat Politècnica de Catalunya
publisher.none.fl_str_mv Universitat Politècnica de Catalunya
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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