| dc.description.abstract | As the number of multiplexed pages increases, the diffraction efficiency of
conventional holographic data storage systems will decrease with the square of
the diffraction efficiency. That is, when the number of multiplexed pages is N
pages, the diffraction efficiency will drop by the square of N, this resultsin limited
storage capacity and reading speed.
When conventional holographic data storage technology attempts to read
multiplexed information, the crosstalk between pages will limit reading pages and
make them too close together, thus, excessive page spacing greatly increases the
motor torque requirements. The process of stopping high-speed reading and then
moving to the next reading position at high speed becomes an impossible task.
Furthermore, the shifting selectivity of the sinc function forces the reading
position to be very close to the writing position in order to read the diffraction
beam, which increases the requirements for motor alignment accuracy.
This paper proposes a holographic data storage technology, called “N times
enhancement of diffraction efficiency of Volume Holographic Multiplexing
Technology”. This holographic data storage technology can record multiple pages
of information at the same location during multi-task recording, which can greatly
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improve the storage capacity of holographic data storage. In addition to improving
storage capacity, it can also read information at the same location by shifting the
hologram, which will greatly elevate the reading efficiency. | en_US |