Craig R G
Appl Opt. 1992 Nov 10;31(32):6840-51. doi: 10.1364/AO.31.006840.
Descriptions of several two-input programmable Boolean optical processing units are presented. These units were designed specifically for use within the optical cellular logic image processor architecture. Results from an experimental implementation of one of these processors are given. Expansion upon one of these units to produce a serial full-adder and subtractor circuit is also shown to be possible.