Research In Optical Correlator For Processing Basic Optical Operations

Nowadays, electronic computers cannot be competent for dealing with various problems needed for vast computing. But digital optical computing has wonderful prospect, owing to the excellent features of light for information processing, e.g., super high-speed, large communication capability, and large parallelism.On the basis of widely and deeply study in the newest progress in optical logic system in digital optical computing area, a discrete correlation parallel optical processor was designed which based on optical logic array processor using shadowgrams and 4-f optical structure along with special coding technique and special filter technique. And a rapid and flexible discrete correlation parallel optical processor was presented which used He-Ne laser, beam expander, reflecting electrically addressed special light modulator: digital micromirror device(DMD), and thin lens, and so on. Some correlative optical experiments were completed, too.The results of theoretic analyses and computer simulations indicate that the designed discrete correlation parallel optical processor can process basic optical logical operations, and it can works as the optical logic operation core of parallel digital optical computing. Furthermore, some significative researches had been done about the affects and solutions on system from the DMD. The results have guidance significances.Theoretical and experimental researches in optical logic operation core as an important part of the parallel optical computing had been done in this paper. These works can contribute to show clearly the way of parallel optical computing and make the parallel optical computing technique have more development.