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Proceedings Paper

Acousto-Optic. Bragg Diffraction In Ion-Exchanged Glass Waveguides
Author(s): S. Ebner; A. Brandenburg; W. Konz; G. Sulz; L. Unger; Ch. Vogel
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Paper Abstract

An integrated-optic Bragg-cell based on diffraction of light by a surface acoustic wave (SAW) was fabricated on glass with a piezoelectric ZnO-layer. The ZnO-film was deposited by RF-magnetron sputtering. To generate a SAW an interdigital electrode array is needed, which is positioned between the glass and the ZnO-film. Such a ZnO-transducer has been tested by the standard RF-measurment techniques for+ SAW filters. The optical waveguides were produced by thermal K -ion exchange in BK7-glass. A special waveguide structure with two intersecting waveguides was used. For increasing the interaction length in the crossing area the monomode waveguides were tapered adiabatically up to a width of 50μm. The diffraction efficiency of such a Bragg-cell in glass was measured to be about 4%-5% at an RF input power of 1W.

Paper Details

Date Published: 5 April 1989
PDF: 4 pages
Proc. SPIE 1014, Micro-Optics, (5 April 1989); doi: 10.1117/12.949432
Show Author Affiliations
S. Ebner, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
A. Brandenburg, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
W. Konz, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
G. Sulz, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
L. Unger, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)
Ch. Vogel, Fraunhofer-Institut fur Physikalische Messtechnik (Germany)


Published in SPIE Proceedings Vol. 1014:
Micro-Optics
Anna Maria Verga Scheggi, Editor(s)

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