Data Channel

Hill, Adrian; Ayres, Mark; Curtis, Kevin; Earhart, Tod

doi:10.1002/9780470666531.ch11

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Recording and Reproducing Experiments2

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2012

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(2 citation statements)

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“…In the pixel configuration, 3 Â 3 pixels represent 1 combined pixel to avoid the sampling mismatch and to allow the oversampling between the SLM and the phase monitor, 18) and the oversampling ratio is about 4.5. There are 1;341 Â 1;008 pixels in a data page, corresponding to 447 Â 336 combined pixels.…”

Section: Recording and Reproducing Experimentsmentioning

confidence: 99%

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Compensation Method for Phase Fluctuation in Holographic Data Storage

Ishii

Muroi

Kinoshita

et al. 2012

Jpn. J. Appl. Phys.

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A method that records accurate information of an object beam is discussed. Before conducting our experiment, the effect of phase fluctuation was calculated using the coupled wave theory. Simulation results showed that the fringe amplitude decreased as the phase noise level increased. We propose a method for phase compensation even if a modulated object beam, which consists of black-and-white pixels, is used with a millisecond recording time. A recording experiment was conducted, in which even pages were without compensation and odd pages were with compensation with 100 angle multiplexing. The obtained results indicate that the mean brightness was increased by 2 ×105, and the mean error count for each page was reduced from 17 to 13 by improving the diffraction efficiency.

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Section: Recording and Reproducing Experimentsmentioning

confidence: 99%

“…The quality of the reproduced signal is normally evaluated as signal-to-noise ratio (SNR). The SNR in holographic data storage is defined as 20)…”

Section: Recording and Reproducing Experimentsmentioning

confidence: 99%