High transfer rate (1 Gbit/sec) high-capacity holographic disk digital data storage system

Summary form only given.Holographic data storage records information in the form of volumetric gratings within the volume of the recording medium. In digital holographic storage information is typically encoded in the form of data pages, which includes modulation coding, data shuffling, and error correction. Selective properties of volumetric gratings allow for a multitude of holograms to be recorded in virtually the same volume through angular, wavelength, or shift and correlation multiplexing techniques. Potentially high data density and transfer rates (which are due to highly parallel access to the stored data) have been a topic of intense research and development. Short data seek time (<100 /spl mu/sec) and high transfer rates (/spl sim/1 Gbit/sec) can be realized in systems with no moving parts which employ bulk photorefractive crystals as storage media. The holographic disk approach allows for an easy access to a large area of the storage media, and, therefore, is more suitable for high capacity applications. Our holographic disks storage system includes hardware implemented channel decoding providing high transfer rate (1 Gbit/sec) and high capacity storage (>100 Gbit per 6.5´ disk).