PatentDOI
Holographic storage using shift multiplexing
TLDR
In this article, the authors present a method of recording successive holograms in a recording medium, using at least a fan of M waves along at least one first axis with a separation angle between adjacent waves and directing the fan of the M waves as a reference beam along a reference path onto the recording medium.Abstract:
The invention is embodied in a method of recording successive holograms in a recording medium, using at least a fan of M waves along at least a first axis with a separation angle between adjacent waves and directing the fan of M waves as a reference beam along a reference beam path onto the recording medium, successively modulating a wave with a succession of images to produce a succession of signal beams along a signal beam path lying at a propagation angle relative to the reference beam path so that the signal and reference beams intersect at a beam intersection lying within the medium, the beam intersection having a size corresponding to beam areas of the reference and signal beams, producing a succession of relative displacements in a direction parallel to the first axis between the recording medium and the beam intersection of the signal and reference beam paths in synchronism with the succession of signal beams, each of the displacements being less than the size of the intersection whereby to record successive holograms partially overlapped along a direction of the displacements.read more
Citations
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Proceedings ArticleDOI
Random phase multiplexing for volume holographic storage
TL;DR: In this paper, two volume holographic storage schemes using random phase multiplexing technique are presented, where a ground glass is spatially shifted to multiplex the signals for both storage schemes.
Patent
Holographic multiple recording method
TL;DR: In this article, a holographic multiple recording method capable of obtaining a uniform remaining dynamic range in each recording area when holographic multi-recording is performed is provided. But the method is not suitable for audio applications.
at a high areal density of 33.7bits/pim2
Yuhong Wan,Shiquan Tao,Dayong Wang,Wei Yuan,Guoqing Liu,Xiaohong Ding,Zhuqing Jiang,Changjiang Liu +7 more
Journal ArticleDOI
4-level 6/9 Modulation Code for Holographic Data Storage
TL;DR: Kim et al. as discussed by the authors proposed a 4-level 6/9 modulation code which mitigated inter-symbol interference (ISI) and inter-page interference (IPI) in HDS.
References
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Journal ArticleDOI
Angle-multiplexed storage of 5000 holograms in lithium niobate.
TL;DR: As many as 5000 holograms of high-resolution images have been stored within a single crystal of Fe:LiNbO3 using fracture-space multiplexing to increase the storage bandwidth.
Journal ArticleDOI
Optical data storage by using orthogonal wavelength-multiplexed volume holograms
TL;DR: A volume holographic data storage scheme that employs counterpropagating reference and image beams and wavelength multiplexing for page differentation and a reduction in holographic cross talk is predicted.
Journal ArticleDOI
Volume hologram multiplexing using a deterministic phase encoding method
TL;DR: A novel phase encoding method using deterministic orthogonal phase codes in a reference-based multiplexing technique is obtained that is able to retrieve multiple images with high diffraction efficiency without energy losses, adjustment problems or any time delay.
PatentDOI
Method for holographic storage using peristrophic multiplexing
TL;DR: A method of multiplexing holograms by rotating the material or, equivalently, the recording beams is described, and a total of 295 holograms in a 38-microm-thick photopolymer film is multiplexed by combining peristrophicmultiplexing with angle multiplexers.