This paper discusses a method of increasing the memory of an optical correlator through the use of matched filter arrays. The matched filters are sequentially addressed using an acousto-optic beam deflector.
James C. Kirsch,
Sandra L. Pessoney,
Don A. Gregory,
"Optical Pattern Recognition Using Sequentially Addressed Matched Filter Arrays," Optical Engineering 28(5), 285482 (1 May 1989). http://dx.doi.org/10.1117/12.7976985