dc.contributor |
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.contributor |
Rodríguez Gomez, Alejandro |
dc.contributor.author |
Crespo Fernández, Luis |
dc.date |
2009-07-20 |
dc.identifier.uri |
http://hdl.handle.net/2099.1/21365 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
dc.subject |
Liquid crystals |
dc.subject |
Cristalls líquids |
dc.title |
Design and testing of a graded-index liquid crystal optical deflector |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
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. |