Abstract

AbstractAn acousto‐optic modulator is made using an optical fiber placed on a ceramic piezoelectric transducer. The photodetected signals show frequency multiplication and phase shifting of the acoustic signals applied to the piezoelectric transducer depending on the lightwave beam incidence angle. The linear polarization of the lightwave is destroyed after passage through the fiber. The normalized lightwave transmission coefficient depends on the acoustic modulating signal frequency, and has values exceeding 1 at or near cross polarization. This is an anomalous phenomenon, letting one assume that pseudoamplification, or intensification, is occurring at the previously stated conditions. © 1993 John Wiley & Sons, Inc.

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