Title :
Holographic storage and associative processing of analog and digital data
Author :
Richling, K.G. ; Mitkas, P.A. ; Mailis, S. ; Boutsikaris, L. ; Vainos, N.A.
Author_Institution :
Dept. of Electr. Eng., Colorado State Univ., Fort Collins, CO, USA
Abstract :
Volume holographic memories combine high storage capacity, massive transfer rates due to page-oriented access, and the ability to associatively search the entire data set in a highly parallel way. We have developed an angularly multiplexed volume holographic associative memory for storing and searching alphanumeric database records. The system uses LiNbO3:Fe as the storage medium and operates in three modes: a) the recording mode, when data pages are loaded on the spatial light modulator (SLM) and written in the crystal, b) the addressed-based retrieval mode, when a certain page is chosen and retrieved with the reference beam incident on the crystal at a given angle (address), and c) the content-based retrieval mode
Keywords :
associative processing; content-addressable storage; holographic storage; iron; lithium compounds; photorefractive materials; spatial light modulators; LiNbO3:Fe; addressed-based retrieval mode; alphanumeric database records; analog data; angularly multiplexed volume holographic associative memory; associatively search; content-based retrieval mode; digital data; high storage capacity; highly parallel way; holographic associative processing; holographic storage; massive transfer rates; page-oriented access; recording mode; reference beam; spatial light modulator; storage medium; volume holographic memories; Analog computers; Associative memory; Associative processing; Content based retrieval; Databases; Error correction codes; Holography; Image storage; Information retrieval; Search engines;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1997. LEOS '97 10th Annual Meeting. Conference Proceedings., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-3895-2
DOI :
10.1109/LEOS.1997.630554
