Special Section on Advances in Optical Components and Subsystems for Wavelength-Division-Multiplexing Communications Components

Intermodulation product effects on the working of a phased-array transducer acousto-optic switch

[+] Author Affiliations
Andre´ Pe´rennou, Ve´ronique Quintard, Yves Mevel, Jean Le Bihan

Ecole Nationale d’Inge´nieurs de Brest, Laboratory RESO, BP 30815, F-29608?Brest Cedex, France E-mail: andre.perennou@enib.fr

Opt. Eng. 43(5), 1042-1050 (May 01, 2004). doi:10.1117/1.1695408
History: Received Nov. 30, 2002; Accepted Jan. 29, 2004; Online April 19, 2004
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Acousto-optic devices play an important role in the field of optical information and communication. For a few years, we have worked on 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. 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 a rf signal applied between successive elementary transducers allows us to tilt one grating so as to interconnect inputs to outputs. To predict and study some physical phenomena generated in this switch architecture, we present some characterizations made on a monotransducer 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). © 2004 Society of Photo-Optical Instrumentation Engineers.

© 2004 Society of Photo-Optical Instrumentation Engineers

Citation

Andre´ Pe´rennou ; Ve´ronique Quintard ; Yves Mevel and Jean Le Bihan
"Intermodulation product effects on the working of a phased-array transducer acousto-optic switch", Opt. Eng. 43(5), 1042-1050 (May 01, 2004). ; http://dx.doi.org/10.1117/1.1695408


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