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Proceedings Paper

Sensitivity, Noise and Optical Crosstalk in Heterodyne Acousto-Optical Signal Processors
Author(s): T. S. Chen; S. K. Yao
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Paper Abstract

It has been suggested that the optical scattering effect in a heterodyne acousto-optical system can be ignored because its beat frequency with the reference beam is outside of the IF passband of the heterodyne detection. Our analysis concludes that this is not true. A finite point spread function convolving with the reference beam of a heterodyne spectrum analyzer causes mixing of photons with different frequency shifts and thus generates IF noise. A signal beam with finite scattering level also contributes to optical cross-talk by mixing with scattered reference beam. This problem is made clear below by analytical derivation and experimental data.

Paper Details

Date Published: 28 October 1985
PDF: 7 pages
Proc. SPIE 0545, Optical Technology for Microwave Applications II, (28 October 1985); doi: 10.1117/12.948359
Show Author Affiliations
T. S. Chen, TRW Electro Optics Research Center (United States)
S. K. Yao, TRE Company (United States)

Published in SPIE Proceedings Vol. 0545:
Optical Technology for Microwave Applications II
Shi-Kay Yao, Editor(s)

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