Optoacoustic Processing of Large Time–Bandwidth Signals

M. Gottlieb; J. J. Conroy; T. Foster

doi:10.1364/AO.11.001068

Applied Optics
Vol. 11,
Issue 5,
pp. 1068-1077
(1972)
•https://doi.org/10.1364/AO.11.001068

Optoacoustic Processing of Large Time–Bandwidth Signals

M. Gottlieb, J. J. Conroy, and T. Foster

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M. Gottlieb, J. J. Conroy, and T. Foster, "Optoacoustic Processing of Large Time–Bandwidth Signals," Appl. Opt. 11, 1068-1077 (1972)

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Abstract

Techniques for achieving time–bandwidth products near 10⁴ and storage times up to 1 msec in optoacoustic processors are described. Folded acoustic path designs in two dimensions, and also in three dimensions along the optic axis, were investigated. Design limitations for these devices are presented. Several devices with potential BT operation between 10³ and 10⁴ were built but tested with lower overall performance because of equipment limitations.

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Binary:	+1, +1, +1, +1, +1, −1, −1, +1, +1, −1, +1, −1, +1
Quarternary:	+ 1, +i, −1, −i, +1, −i, +1, −i, +1, −i, −1 +i, +1
Sextic:	exp(jπ/3), exp(j2π/3), −1, exp(−j2π/3), exp(−jπ/3), −1, exp(−j2π/3), exp(j2π/3), −1, exp(jπ/3), exp(−jπ/3), −1, exp(jπ/3)

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Applied Optics