26 July 1993 Double optical correlator with spatial filtering by complementary Fourier transforms
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Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19834S (1993) https://doi.org/10.1117/12.2308591
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary
Abstract
Technological realities are a severe limiting factor for the expected general use of optical cor- relation. This is a particularly crucial issue in view of the importance of the information co- ding on the signal to noise ratio. A current trade-off between phase and amplitude coding makes use of liquid cristals light valves (LCLV). This proposal describes an optical processor where the LCLV is addressed by a filtered image as writing beam and, in contrast with the usual plane wave, the Fourier transform of a modu- lated beam as read-out beam. This operating mode enables non standard use of available technologies ; in particular, due to double correlation, signal dynamics in the Fourier plane is a less stringent factor.
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Eugene O. Curatu, Eugene O. Curatu, } "Double optical correlator with spatial filtering by complementary Fourier transforms", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19834S (26 July 1993); doi: 10.1117/12.2308591; https://doi.org/10.1117/12.2308591
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