Abstract
We develop two bit-oriented holographic data storage systems. They both consist in a recording medium deposited on a mirror where wavelength multiplexed Bragg gratings are inscribed by the interferences of the incident beam and its counterpropagating reflection. In the first system, a Lippmann disk, the incident beam is directly focused on the mirror. System tolerances and data transfer rates are attractive with such geometry, but capacity seems limited. Capacity increase is possible with the second system, where the recording medium has been structured in an array of photosensitive microfibers. Gratings can thus be recorded with an efficient transverse confinement over the whole thickness of the data layer.
© 2005 Optical Society of America
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