Are holograms the future for data storage? The digital age demands greater and greater processing power, data storage and data encryption for computer based technologies. Recent developments point towards optical information processing as a great leap forward. Optical technologies use light-based techniques and sources such as lasers to create holograms. Such holograms have been shown to be able to store, write and read massive amounts of data. These holographic data storage techniques can also be accessed at high speeds. A new paper, by Japanese researchers from Nagaoka University of Technology and University of Hyogo , Akira Emoto, Hiroshi Ono and Nobuhiro Kawatsuki says that holographic data storage techniques are of particular interest as they allow the registration, transformation, and manipulation of the spatial structure of the light wave fronts. The paper presents a matched filter technique which allows the spatial correlation of two optical images for pattern classification and/or detection. The results demonstrate optical image correlation by means of Fourier transform holograms in the region of Raman-Nath diffraction on to photorefractive mesogenic composites film. The reconstructed image produced is readily recognisable as common numerals. Greater study is required into this technique but it points to a new method for fast, efficient storage of incredible amounts of data with high levels of security encryption. Source: AZojomo
•Date: 28th March 2006• Region: World • Type: Article •Topic: IT continuity |
