Frequency-Variant Optical Signal Processing

J. M. Florence; W. T. Rhodes

doi:10.1117/12.954902

12 January 1977 Frequency-Variant Optical Signal Processing

J. M. Florence, W. T. Rhodes

Proceedings Volume 0083, Optical Information Processing: Real Time Devices & Novel Techniques; (1977) https://doi.org/10.1117/12.954902
Event: 20th Annual Technical Symposium, 1976, San Diego, United States

Abstract

By their basic two-dimensional nature, coherent optical systems provide an additional degree of freedom for the processing of one-dimensional signals (e.g., speech, radar, and general communication signals). This second degree of freedom has been used in the past to increase substantially the information throughput of optical processors for one-dimensional signals. We describe here how it can be exploited to increase the kinds of operations that can be performed optically, concentrating on signal processing operations that are frequency-variant. One example considered is the frequency-variant spectral analysis of signal waveforms, a specific case being a log-frequency constant proportional bandwidth spectrum analyzer. Also discussed are applications of the basic concepts, combined with optical heterodyne techniques, to linear and nonlinear bandwidth compression. Analytical and experimental results are presented.

Citation Download Citation

J. M. Florence and W. T. Rhodes "Frequency-Variant Optical Signal Processing", Proc. SPIE 0083, Optical Information Processing: Real Time Devices & Novel Techniques, (12 January 1977); https://doi.org/10.1117/12.954902

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