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21 September 1979 Acousto-Optic Signal Processing Device Performance
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Proceedings Volume 0180, Real-Time Signal Processing II; (1979)
Event: Technical Symposium East, 1979, Washington, D.C., United States
Acoustooptic devices provide the function of electrical to optical input transducers in many real-time optical processors of electronic signals. Particular implementations and applications emphasize modulation in space or time connected by a traveling-wave relation. Principal two-dimensional processor.s are spectrum analyzers and correlators. Multiport AO cells are useful in three-dimensional optical processing of two variables, such as frequency and phase. The performance of AO devices is limited by ef5iciency-bandwidth aperture tradeoffs which limit time bandwidths to approximately 10 for most practical devices. High efficiency devices (100%/W) have been developed for bandwidths up to approximately 600 MHz. At wider bandwidths, material attenuation and acoustooptic characteristics sharply limit efficiency, although near ideal piezoelectric transducers can be fabricated.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David L. Hecht "Acousto-Optic Signal Processing Device Performance", Proc. SPIE 0180, Real-Time Signal Processing II, (21 September 1979);


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