Abstract: Several advantages are afforded by the use of surface-acoustic- wave (SAW) acousto-optic (AO). Multiple transducer SAW AO delay lines allow several noninterfering wide-bandwidth signals to be introduced into the processing volume simultaneously. This allows overall processor size and complexity to be reduced. Rapid (often real-time) optical processing of signals can be performed at the interception point. One- and two-dimensional time-integrating AO correlation architectures using such SAW devices are shown, and their application in some systems are discussed. The same SAW AO device technology can be used with advantage in switching applications. This paper also discusses a new AO permutation network approach and device considerations for the implementation of this network. With the use of SAW AO device technology on lithium niobate, the permutation network can be integrated onto a single chip; several such optical chips can be interconnected to implement more complex switching networks for wide-bandwidth switching applications.!28
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