Advanced Lens Design for Bit-Wise Volumetric Optical Data Storage

Advanced Lens Design for Bit-Wise Volumetric Optical Data Storage

The storage capacity of a fluorescent bit-wise volumetric optical data storage system is limited by the inter-layer crosstalk and the maximum compensation range of spherical aberration induced by different layers inside the medium. Lens designs of far-field and near-field optical systems suitable fo...

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Veröffentlicht in:Japanese Journal of Applied Physics 2004-07, Vol.43 (7S), p.4929
Hauptverfasser: Zhang, Yan, Milster, Tom D., Kim, Jai Soon, Park, Sang-Ki
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container_title Japanese Journal of Applied Physics
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creator Zhang, Yan
Milster, Tom D.
Kim, Jai Soon
Park, Sang-Ki
description The storage capacity of a fluorescent bit-wise volumetric optical data storage system is limited by the inter-layer crosstalk and the maximum compensation range of spherical aberration induced by different layers inside the medium. Lens designs of far-field and near-field optical systems suitable for volumetric storage are presented. The maximum compensation range of each design is calculated. The storage densities of far-field and near-field confocal systems in terms of bits-in -2 are derived based on the maximum compensation ranges and appropriate data layer spacings that induce a -30 dB maximum level of inter-layer crosstalk. It is shown that an optimized near-field system is able to achieve 1.65 Tb-in -2 data density.
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title Advanced Lens Design for Bit-Wise Volumetric Optical Data Storage
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