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Proceedings Paper

Characterizations for an acousto-optic switch architecture with phased array transducers
Author(s): Veronique Quintard; Andre Perennou; Yves Mevel; F. Payoux; Jean Le Bihan
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Paper Abstract

Acousto-optic devices play an important role in the field of optical information and communication. For a few years, we have worked upon acousto-optic deflection in the Bragg regime, at 1.55 µm wavelength, by controlling the RF signal applied to the piezoelectric transducer. Recently, still using the acousto-optic interaction, we have taken an interest in the 2×2 switching function. In this paper, we present an acousto-optic switch architecture based on phased array transducers. In the same crystal, we superimpose two diffraction gratings created by two RF signals. Generating a phase shift on an RF signal applied between successive elementary transducers allows us to tilt one grating so as to interconnect inputs to outputs. In order to predict and to study some physical phenomena generated in this switch architecture, we present some characterizations made upon a mono-transducer cell. We point out the optical cross talk between output paths (influence of the intermodulation products due to the superimposition of two RF signals on the same transducer) and the electrical cross talk influence on optical diffraction efficiency.

Paper Details

Date Published: 11 July 2002
PDF: 10 pages
Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, (11 July 2002); doi: 10.1117/12.475575
Show Author Affiliations
Veronique Quintard, Ecole Nationale d'Ingenieurs de Brest (France)
Andre Perennou, Ecole Nationale d'Ingenieurs de Brest (France)
Yves Mevel, Ecole Nationale d'Ingenieurs de Brest (France)
F. Payoux, Ecole Nationale d'Ingenieurs de Brest (France)
Jean Le Bihan, Ecole Nationale d'Ingenieurs de Brest (France)


Published in SPIE Proceedings Vol. 4870:
Active and Passive Optical Components for WDM Communications II
Achyut Kumar Dutta; Abdul Ahad Sami Awwal; Niloy K. Dutta; Katsunari Okamoto, Editor(s)

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