Finite element analysis of surface acoustic waves in high aspect ratio electrodes

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This paper elaborates on how the finite element method is employed to model surface acoustic waves generated by high aspect ratio electrodes and their interaction with optical waves in a waveguide. With a periodic model it is shown that these electrodes act as a mechanical resonator which slows down the SAWvelocity because of mechanical energy storage. A finite model is furthermore employed to study the acousto-optical interaction and shows that it is possible to get a bigger change in effective refractive index with these surface acoustic waves compared to using conventional interdigital transducers. Thus, this indicates a way to improve acousto-optical interaction.
Original languageEnglish
Title of host publicationProceedings of the 9. International Conference on Computational Structures Technology
EditorsBHV Topping, M Papadrakakis
Place of PublicationStirlingshire, United Kingdom
PublisherCivil-Comp Press
Publication date2008
Pagespaper 90
ISBN (Print)978-1-905088-23-2
Publication statusPublished - 2008
Event9th International Conference on Computational Structures Technology - Athens, Greece
Duration: 2 Sep 20085 Sep 2008
Conference number: 9
http://www.civil-comp.com/conf/cst2008.htm

Conference

Conference9th International Conference on Computational Structures Technology
Number9
CountryGreece
CityAthens
Period02/09/200805/09/2008
Internet address

    Research areas

  • finite element analysis, perfectly matched layers, piezoelectric material, acousto-optic interaction, surface acoustic waves

ID: 3201181