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
More filters
Patent
Holographic recording techniques using first and second portions of a spatial light modulator
TL;DR: In this paper, a spatial light modulator is used to create the data encoded object beam and the reference beam, which are then used to interfere in a holographic medium to record a hologram.
Journal ArticleDOI
Multilayer recording holographic data storage using a varifocal lens generated with a kinoform
TL;DR: Experimental results show that the proposed multilayer recording method allows the recording of holograms along an optical axis without any mechanical movement.
Book ChapterDOI
High-Density, High-Performance Data Storage via Volume Holography: The Lucent Technologies Hardware Platform
TL;DR: Holography has long been considered as a emerging technology for developing data storage devices with high density, large capacity, and fast transfer rate.
Journal ArticleDOI
Recording of volume hologram using a beam pattern from tapered optical fiber
TL;DR: In this paper, a photorefractive volume hologram was recorded and probed using light diffracted from a tapered optical fiber as a reference beam, which was used to increase the storage density of volume holograms.
Journal ArticleDOI
Tone-Controllable Codes for Holographic Data Storage System
TL;DR: In this paper, the encoding/decoding rules are introduced and the bit error rate (BER) performance of the tone-controllable codes having various ratios of ON and OFF pixels are simulated.
References
More filters
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.