INTERLEAVING AND ERROR CORRECTING IN VOLUME HOLOGRAPHIC DATA STORAGE

Volume holographic storage has the potential to offer high density, fast data readout, and associative content addressable storage. But in order to make it a general-purpose data storage system, it is very important to attain these desirable goals simultaneously with the acceptable bit error rate （BER）（10 -12）. Careful engineering of the optics alone is not generally the most cost-effective solution to reducing the BER to the target value. A properly designed error correcting code and interleaving can alleviate the requirements for the BER,relax the requirements for system design and quality of the components, and correct a 10 -5 raw BER to the 10 -12 level without sacrificing other system goals. Studied in this paper are the noise and error sources in digital volume holographic data storage channel, and the error-correcting codes and the two-dimensional interleaving for volume holographic storage systems.