title: Free-space folded-path optical programmable logic array.
abstract: A new method to realize a medium-scale, free-space optical programmable logic array is proposed. By using either a two-dimensional optical spatial light modulator or an array of one-dimensional spatial light modulators inside a lens-based multiple-beam-path cavity, an array of optical multiple-variable logic product terms is generated. This device, together with a programmable multiple-variable OR matrix, can be used to implement any Boolean combinatorial logic operations. For an optical binary combinatorial logic computation, the proposed method efficiently uses three-dimensional space and optical elements. Preliminary experimental results obtained using an inexpensive liquid-crystal television are included.
authors.forename: Y
authors.initials: Y
authors.lastname: Li
authors.forename: A
authors.initials: A
authors.lastname: Kostrzewski
authors.forename: D H
authors.initials: DH
authors.lastname: Kim
authors.forename: G
authors.initials: G
authors.lastname: Eichmann