Acousto-Optic Signal Processing Device Performance

David L. Hecht

doi:10.1117/12.957325

21 September 1979 Acousto-Optic Signal Processing Device Performance

David L. Hecht

Proceedings Volume 0180, Real-Time Signal Processing II; (1979) https://doi.org/10.1117/12.957325
Event: Technical Symposium East, 1979, Washington, D.C., United States

Abstract

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.

Citation Download Citation

David L. Hecht "Acousto-Optic Signal Processing Device Performance", Proc. SPIE 0180, Real-Time Signal Processing II, (21 September 1979); https://doi.org/10.1117/12.957325

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