Characterizations for an acousto-optic switch architecture with phased array transducers

Veronique Quintard; Andre Perennou; Yves Mevel; F. Payoux; Jean Le Bihan

doi:10.1117/12.475575

11 July 2002 Characterizations for an acousto-optic switch architecture with phased array transducers

Veronique Quintard, Andre Perennou, Yves Mevel, F. Payoux, Jean Le Bihan

Proceedings Volume 4870, Active and Passive Optical Components for WDM Communications II; (2002) https://doi.org/10.1117/12.475575
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States

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.

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Veronique Quintard, Andre Perennou, Yves Mevel, F. Payoux, and Jean Le Bihan "Characterizations for an acousto-optic switch architecture with phased array transducers", Proc. SPIE 4870, Active and Passive Optical Components for WDM Communications II, (11 July 2002); https://doi.org/10.1117/12.475575

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KEYWORDS

Transducers

Diffraction

Acousto-optics

Diffraction gratings

Phased array optics

Switches

Acoustics

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