1 June 1980 Surface-Wave Acousto-Optic Signal Processors
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Abstract
A number of signal-processing devices have been developed that use the Bragg interaction between laser beams and surface acoustic waves in transparent delay lines. Convolvers and correlators having time-bandwidth products of up to 10,000 have been constructed and have been used to obtain signal-to-noise enhancement of signals buried in noise. A real-time, continuous Fourier transformer has been achieved. Initial results have been obtained in performing a discrete Fourier transform using an acoustooptic implementation of the triple-product convolver. A programmable memory correlator based on the acousto-photorefractive effect has been demonstrated using two distinct writing modes and writing-laser wavelengths.
N. J. Berg, J. N. Lee, B. J. Udelson, "Surface-Wave Acousto-Optic Signal Processors," Optical Engineering 19(3), 193359 (1 June 1980). https://doi.org/10.1117/12.7972520 . Submission:
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