Integrated optic devices using liquid crystals: design and fabrication issues

d'Alessandro, Antonio and Asquini, Rita and Bellini, R. P. and Donisi, Domenico and Beccherelli, Romeo (2004) Integrated optic devices using liquid crystals: design and fabrication issues. In: Liquid Crystals. Proceedings of SPIE , VIII (5518). SPIE-INT Soc. Optical Engineering, Bellingham, USA , pp. 123-135. ISBN 0-8194-5456-7

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Integrated optic devices using liquid crystals embedded in optical waveguiding structures have advantages in terms of compactness and high performance. Such devices exploits the high electro-optic effect and the good optical properties of liquid crystals, in particular their high birefringence and their low absorption, combined with low loss optical waveguides. Optical switches based on ion-exchanged channel glass waveguides and liquid crystals operating in the Cband used for optical communications have been designed by using beam propagation method. Polarization independent configurations are described and evaluated in terms of crosstalk and losses. Feasibility of tunable optical filters using composites materials made of polymer and nematic liquid crystals to be used in optical communication and sensor systems is demonstrated. Materials and fabrication procedures of both integrated optical switches and filters are also discussed.

Item Type: Book Section
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini
Depositing User: Danilo Dezzi
Date Deposited: 21 Dec 2012 11:09
Last Modified: 22 Mar 2013 14:41

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