Holographic data storage is a potential technology in the area of highcapacity data storage currently dominated by magnetic and conventional optical data storage. From theory to practical systems holographic visions. Current research concentrates on system design, understanding and combating noise, and developing appropriate storage materials. Digital superresolution holographic data storage based on. Later chapters highlight recent developments in holographic storage. Holographic data storage system hdss has been a good candidate for a volumetric recording technology, due to their large storage capacities and high transfer rates, and have been researched for tens of years after the principle of holography was first proposed. Holographic data storage wiley online books wiley online library. Mar 25, 2016 an introduction to black holes information and the string theory revolution. The seminar is on holographic data storage, a revolutionary idea in the field of data storage system. It was created with the initial goals of developing several key components for the system, including a high. Coufal ibm, demetri psaltis caltech, and glenn sincerbox university of arizona, together with leading experts in this area of research from both academic research and industry, bring. Holographic data storage digital data storage using volume holograms offers high density and fast readout. Plane wave testing of materials is a fundamental tool for basic holographic material development. Digital holographic techniques are capable of modulating and detecting complex amplitude distribution using current electronic devices.
This lesson introduces a potential technology holographic data storage. Threedimensional data storage will be able to store more information in a smaller space and offer faster data transfer times. Innovations, developments, and new insights gained in. Highspeed random access data transfer 1gbs major products. Holographic recording methods require the use of a reference beam that is coherent with the signal beam carrying the information to be recorded. The ability to copy the contents from a disk master to a low cost disk copy in a few seconds is a very powerful economic force. From theory to practical systems william wilson and. The ability to store large amounts of information in some kind of medium is of great importance, as many electronic products incorporate storage devices. Work on the program began in 1994 and was funded by darpa.
From theory to practical systems is a primer on the design and building of a holographic data storage system covering the physics. It is based on the similar concept of optical storage devices but it enables the use of a single storage volume to store large amounts of data. The overall theme of our research is the evaluation. Media testing holographic data storage wiley online library. It must match the original reference beam angle exactly. The history of the holographic data storage follows the introduction. Development of imagebased simulation for holographic. Holographic data storage by kevin curtis overdrive.
Visions, holographic imaging holographic data storage. From theory to practical systems is a primer on the design and building of a holographic data storage system covering the physics, servo, data channel, recording. Holographic media shelf and archival lifetime needs to be well characterized for a holographic storage product to be realized. Selfreferential holography and its applications to data.
It takes a look at how holographic data storage works, why it is a viable technology for us, and what it might mean for the. Drams and disks in holographic data storage, data are first turned into a twodimensional pattern of light by a spatial light modulator slm. An introduction to black holes information and the string theory revolution. The glass backbone of the storage system offers certain advantages over the plastic polymer matrixes that are currently being developed for holographic storage. However, the film undergoes a reversible photoredox reaction by the alternating action of visible and uv lights, which weakens. In 1996, a team at stanford university proposed using a storage lens with a numerical aperture na large enough to allow both the signal beam and reference beam to pass holographic data storage. Holographic data storage is an outstanding reference book on an exciting topic reaching out to the 21st centurys key technologies. Introduction holographic data storage wiley online library. The key to making the holographic data storage system work is the second laser beam which is fired at the crystal to retrieve a page of data. Through the comparison of experimental results with theory, the validity of the optical. Jun 25, 2010 holographic storage offers a compelling alternative because the capacity and transfer rate are competitive with tape, with the additional benefit of random access in a disk format.
Pdf holographic data storage technology researchgate. Holographic data storage system hdss is one of the promising candidates for. Srh can realize purely onebeam holographic recording by considering the signal beam itself as the reference. Holographic data storage hds, which is an optical storage method based on the principles of holography, can realize large storage capacities and high transfer rates that greatly exceed those. Holographic data storage is a potential technology in the area of highcapacity data storage.
However, these systems, called conventional 2axis holography, still have essential issues for commercialization of products. Shift multiplexing with a spherical wave in holographic. This chapter details both the technology for compact inexpensive holographic read only memory hrom drives required for the consumer market as well as a high speed low cost replication method for the media. Innovations, developments, and new insights gained in the design and operation of working storage. However, these systems, called conventional 2axis holography, still have essential issues for. From theory to practical systems is a primer on the design and building of a holographic data storage system covering the.
In this paper, we propose selfreferential holography srh for holographic recording without the use of a reference beam. From theory to practical systems the central mechanism of permanent hologram formation in photopolymers, mass transport, imparts one of the most. Metalsemiconductor nanocomposite systems with the ability of controllable holographic storage are fascinating for advancing information technology. Osa digital superresolution holographic data storage based. This chapter covers the media test equipment and processes for both the development and the manufacturing processes. This chapter details both the technology for compact inexpensive holog. Holographic data storage systems hdsss,1,2 which can achieve a high data storage density and a high data transfer rate, are expected to be nextgeneration optical data storage systems.
While magnetic and optical data storage devices rely on individual bits being stored as distinct magnetic or optical changes on the surface of the recording medium, holographic data storage records information throughout the volume of the medium and is. Three dimensional or holographic data storage involves using the entire media for storage, not just a few layers like we currently use today. What is holographic data storage what is holographic data storage. A compact holographic data storage with 10 gb nonvolatile random access memory per cube with potential of reaching 1 tb memory board by stacking 10 x 10 cubes. The process is accomplished by using two laser beams, instead of one, to write data to the disk. Holographic read only memories holographic data storage. The report has been carefully created such that it conveys the idea right from the basics to the higher level of the topic. Digital superresolution holographic data storage based on hermitian symmetry is proposed to store digital data in a tiny area of a medium. A holographic data storage system based on a computergenerated hologram cgh is simple and compact because a hologram of a data page is recorded through an imaging system without an additional optical path for a reference beam. In this paper, to improve the recording density of the holographic data storage based on a cgh, a shift multiplexing method using a spherical.
Agtio2 nanocomposite films present multicolor photochromism, which plays a key role in highdensity optical memory. The revolutionary theory of reality holographic interferometry. Possible applications include fast data servers and highcapacity optical disks. In this article, you will learn how a holographic storage system might be built in the next three or four years, and what it will take to make a desktop version of such a highdensity storage system. These kind of documents require 10 to times the storage capacity. Holographic storage has been been something of a digital philosophers stone since the 60s, promising infinite storage and massive data rates and now, thanks to hvault, it might finally find. From theory to practical systems holographic data storage.
Holography can be put to a variety of uses other than recording images. In recent years, photopolymer materials are being actively studied for practical applications such. Holographic data storage by kevin curtis overdrive rakuten. We present an overview of our research effort on volume holographic digital data storage.
Holographic data storage hds, which makes use of the full volume of the recording medium, possesses high potential by promising fast transfer rates of hundreds of megabytessec and storage densities greater than 200 gbytes per 120mm disk. Jun 25, 2010 holographic media shelf and archival lifetime needs to be well characterized for a holographic storage product to be realized. Holographic data storage system hdss programme was a us federal governmentfunded consortium on holographic data storage, by teledyne technologies, ibm and stanford university, created in 1995. A holographic data storage system using digital holography is proposed to record and retrieve multilevel complex amplitude data pages. These techniques allow the development of a simple, compact, and stable holographic storage. Still further improvement of the wave aberration will be required for practical use, but we. Magnetic and optical data storage devices rely on individual bits being stored as distinct magnetic or optical changes on the surface of the recording medium. Holographic storage offers a compelling alternative because the capacity and transfer rate are competitive with tape, with the additional benefit of random access in a disk format. Aug 27, 20 holographic data storage is a potential technology in the area of highcapacity data storage currently dominated by magnetic and conventional optical data storage. Conventional holographic data storage systems however have a limitation in reducing a recording area. From theory to practical systems is a primer on the.
High density collinear holographic data storage system. Coufal ibm, demetri psaltis caltech, and glenn sincerbox university of arizona, together with leading experts in this area of research from both academic research and industry, bring together the latest knowledge on this technique. Practical prototypes of more modest systems also have shown that holographic data storage does not have to be trapped in the laboratory forever. Read an introduction to black holes information and the. Srh can realize purely onebeam holographic recording by considering the signal beam itself as the reference beam. From theory to practical systems kindle edition by kevin curtis, lisa dhar, adrian hill, william wilson, mark ayres. A machzehnder approach an introduction to black holes, information and the. Osa multilevel recording of complex amplitude data pages. A difference of just a thousandth of a millimeter will result in failure to retrieve the data. Jul 12, 2001 the glass backbone of the storage system offers certain advantages over the plastic polymer matrixes that are currently being developed for holographic storage. Holographic data storage is a technique that can store information at high density inside crystals or photopolymers. The restrictions that are placed on the holographic media, however, are stringent. However, the film undergoes a reversible photoredox reaction by the alternating action of visible and uv.
A team of scientists from the ibm research division have been involved in exploring holographic data storage, partially as a partner in the darpainitiated consortia on holographic data storage systems hdss and on. This introductory chapter presents the technologies that enable practical holographic storage systems. From theory to practical systems the holographic universe. Osa uvresistant holographic data storage in noblemetal. From theory to practical systems is a primer on the design and building of a holographic data storage system. In general, reducing a recording area with an aperture leads to the improvement in the storage capacity of holographic data storage. Apr 16, 2012 holographic storage has been been something of a digital philosophers stone since the 60s, promising infinite storage and massive data rates and now, thanks to hvault, it might finally find. From theory to practical systems is a primer on the design and building of a holographic data storage system covering the physics, servo, data channel, recording materials, and optics behind holographic storage, the requirements of a functioning system, and its integration into reallife systems. Holographic data storage media for practical systems. From theory to practical systems the central mechanism of permanent hologram formation in photopolymers, mass transport, imparts one. While magnetic and optical data storage devices rely on individual bits being stored as distinct magnetic or optical changes on the surface of the recording medium, holographic data storage records information throughout the volume of the medium and is capable of recording multiple images. A machzehnder approach an introduction to black holes, information and the string theory revolution.
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