EnglishDTU.dkIndeksKontaktTelefonbogAlumnenetværkPortalen
Forside > Forskning > Publikationer > 2008-2001
PhD
Tema artikler
Publikationer
2012
2011
2010
2009
2008-2001
2008
2007
2006
Publikationer 2005
Publikationer 2004
Publikationer 2003
Publikationer 2002
Publikationer 2001
ORBIT
Forskning på DTU
Titel: Improving Acousto-Optical Interaction by Mechanical Resonators on a Surface
Type: PosterPoster
Person(er):
Forfatter:  Dühring, Maria Bayard (Cwisno: 21360)
Technical University of Denmark

Forfatter:  Laude, Vincent
Centre National de la Recherche Scientifique, Institut FEMTO-ST

Forfatter:  Khelif, Abdelkrim
Centre National de la Recherche Scientifique, Institut FEMTO-ST
Uddrag: The finite element method is employed to model surface acoustic waves generated by high aspect ratio electrodes and their interaction with an optical wave in a waveguide. With a periodic model it is first shown that these electrodes act as a mechanical resonator, which introduces several confined modes with slow phase velocities because of mechanical energy storage. The periodic model is extended to a finite model by using perfectly matched layers at the boundaries and the periodic and the finite model are in fine agreement. The finite model is then employed to study the acousto-optical interaction with an optical wave in a waveguide. The difference in effective refractive index is calculated for the case where a positive and a negative electric potential, respectively, are applied to the electrode above the optical waveguide. This difference is increased more than 500 times using these new types of surface acoustic waves compared to using a conventional interdigital transducer with thin electrodes. Thus, this indicates a way to improve acousto-optical interaction for integrated modulators.
Publiceret:
Præsenteret ved: NanoDay, Technical University of Denmark, Lyngby
Se publikationen i DTU Orbit Se publikationen i DTU Orbit

Top
Nils Koppels AlléBygning 4042800 Kgs. LyngbyTlf. 45 25 19 60CVR-nr. 30060946EAN-nr. 5798000430419
Cookies