Double optical correlator with spatial filtering by complementary Fourier transforms

Eugene O. Curatu

doi:10.1117/12.2308591

26 July 1993 Double optical correlator with spatial filtering by complementary Fourier transforms

Eugene O. Curatu

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.

Citation Download Citation

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); https://doi.org/10.1117/12.2308591

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available