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Conference on Holography - advances and Modern Trends II

作者： Fernandez, Elena Marquez, Andres Pinol, Diego Padilla, Javier Pascual, Inmaculada Univ Alicante Dept Opt Farmacol & Anat Apartado 99 E-03080 Alicante Spain Univ Alicante Dept Fis Ingn Sistemas & Teor Senal E-03080 Alicante Spain

ISBN: (纸本)9780819486646

Holographic data storage is a new optical technology which allows storing an important number of bits in a recording material. In this work, two different types of modulations, defocused binary intensity modulation and phase modulation, are compared to obtain which modulation could be the most suitable for holographic data storage. The best modulation would be the modulation with a homogeneous distribution of energy in the FT plane with no zero frequency peak.

关键词： Holographic data storage LCD modulations

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Preparation and characterization of magnetic polymeric thin films

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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 2002年第1-3期252卷 20-22页

作者： Misra, SCK Pant, RP Pandey, JL Kumar, N Natl Phys Lab New Delhi 110012 India Def Lab Jodhpur Rajasthan India

The revolution in information technology has led the scientists to look for advanced materials to cater for the growing capacity of data storage. Over the recent years, significant advances have been made in the development of materials, which possess smart and intelligent functions of the magnetic data storage and handling. These magnetic materials exhibit ferroelectric, ferrielectric and anti-ferroelectric properties. There have been successful attempts to prepare semiconducting conjugated polymers as potential materials, which has potential of being used as a base material. The magnetic properties of polyaniline are achieved by suitably doping the base material. We have developed a unique and novel method for preparation of polyaniline magnetic thin films by vapor deposition of magnetic polyaniline powder on various substrates. The characterization of thin films by optical absorption, SEM, X-ray are reported here. These studies suggest that vacuum deposited magnetic polyaniline thin films are suitable for magnetic data storage device fabrication. (C) 2002 Elsevier Science B.V. All rights reserved.

关键词： polyaniline magnetic thin films data storage devices

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Recent advances in Photonic Devices for optical Super Computing

Recent Advances in Photonic Devices for Optical Super Comput...

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1st International Workshop on optical SuperComputing

作者： Abdeldayern, Hossin Frazier, Donald O. Witherow, William K. Banks, Curtis E. Penn, Benjamin G. Paley, Mark S. NASA Goddard Space Flight Ctr Code 305 Greenbelt MD 20771 USA NASA Marshall Space Flight Ctr Huntsville AL 35812 USA NASA Marshall Space Flight Ctr ISHM & Sensors Branch Huntsville AL 35812 USA NASA Marshall Space Flight Ctr AZ TECH Huntsville AL 35812 USA

ISBN: (纸本)9783540856726

The twentieth century has been the era of semiconductor materials and electronic technology while this millennium is expected to be the age of photonic materials and optical technology. optical technology has led to countless optical devices that have become indispensable in our daily lives in storage area networks (SANs) [1], parallel processing [2,3], optical switches [4,5], all-optical data networks [6], holographic storage devices [7] and biometric devices at airports [8]. © 2008 Springer-Verlag Berlin Heidelberg.

关键词： optical switches

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Lyteloop data "storage in Motion"

Lyteloop Data "Storage in Motion"

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Conference on Industrial optical Devices and Systems (ODS) as part of the SPIE Optics + Photonics Conference

作者： McManamon, P. F. Vedadi, A. Willner, A. Choudhary, D. Harlev, O. Lyteloop 80 Cuttermill RdSuite 309 Great Neck NY 11021 USA Exciting Technol LLC Dayton OH 45424 USA USC Los Angeles CA USA

ISBN: (数字)9781510629448

ISBN: (纸本)9781510629448

This paper presents a patent pending approach to store digital data using high bandwidth laser light in motion. data is stored in a loop. The amount of data stored is the data rate times the storage time. Lyteloop uses: (i) highly multiplexed optical communications to maximize data rate, and (ii) a long light path, to maximize length of time it takes light to traverse the full storage loop. Lyteloop is developing data storage in motion in 4 domains : fiber, space, and two forms of near vacuum chambers. Multiplexing is done across very wide wavelength ranges, and many spatial modes. OEM modes will be used in free space at the shorter wavelengths, and other spatial mode structures will be used in fibers. Multiple cores will be used in fibers. A 1.5 Gigabyte demonstation data storage unit has been built in fiber, and is described, along with its performance. We are starting a free space prototype. Lyteloop builds on, and advances, both free space, and fiber, high data rate communications technology as a method of storing data in motion. We also have patent pending approaches to increase the length of the data stroage loop. Less complex, and lower power, signal regeneration will be required to achive Lytelops's goals.

关键词： data storage data transfer rates Vacuum chambers Fiber digital data

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optical COMPUTING, optical MEMORY, AND SBIRS AT FOSTER-MILLER 5

OPTICAL COMPUTING, OPTICAL MEMORY, AND SBIRS AT FOSTER-MILLE...

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5th Conference on optical Pattern Recognition

作者： DOMASH, LH FOSTER MILLER INC WALTHAMMA 02154

ISBN: (纸本)0819415413

A desktop design and manufacturing system for binary diffractive elements, MacBEEP, was developed with the optical researcher in mind. optical processing systems for specialized tasks such as cellular automation computation and fractal measurement were constructed. A new family of switchable holograms has enabled several applications for control of laser beams in optical memories. New spatial light modulators and optical logic elements have been demonstrated based on a more manufacturable semiconductor technology. Novel synthetic and polymeric nonlinear materials for optical storage are under development in an integrated memory architecture. SBIR programs enable creative contributions from smaller companies, both product oriented and technology oriented, and support advances that might not otherwise be developed.

关键词： Optics manufacturing optical storage Fractal analysis Holograms Polymers Binary data Holography optical signal processing Computer aided design optical computing

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Associative random access machines and data-parallel multiway binary-search join

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FUTURE GENERATION COMPUTER SYSTEMS-THE INTERNATIONAL JOURNAL OF ESCIENCE 1998年第6期13卷 451-467页

作者： Cho, OH Colomb, RM Univ Queensland Sch Informat Technol Brisbane Qld 4072 Australia

Rapid advances in semiconductor technology have made it possible to build massively parallel processors. In addition, optical 3D storage and optical interconnections open a new opportunity due to inherent massive parallelism and non-interference of light beams. The approaches used in current parallel database research cannot take advantage of massive parallelism which can be provided by the emerging technologies, due to speedup and scaleup limitations. In this paper, we present a computational paradigm for database machines which takes advantage of the opening opportunity for massive parallelism and discuss the validity and feasibility of the paradigm. The approach we take is based on associative computing and fine grained data parallelism which allow unlimited speedup and scaleup. Additionally, an asymptotically fast data-parallel join algorithm, which can efficiently deal with the joins in which multiple relations share a common join field, is presented. The algorithm is based on parallel sorting and parallel binary search, and performs a multiway join in O(Sigma s + Sigma log r) where s is the cost of sorting an intermediate relation and r is the size of an input relation. The cost s of sorting is kept minimum by the algorithm. (C) 1998 Elsevier Science B.V.

关键词： massive parallel database machine relational join associative computing data parallelism optical computing

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Use of optical storage for patent image retrieval-the U.S. Patent and Trademark Office's automated patent system

Use of optical storage for patent image retrieval-the U.S. P...

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storage and Retrieval Systems and Applications

作者： Jacobson, Stephen R. U.S. Patent and Trademark Office Arlington United States

ISBN: (纸本)0819402958

The Automated Patent System (APS) was designed, among other things, to assist the patent examiner in performing the patent search. It is a fully distributed system that uses custom-built high-resolution dual-display intelligent workstations, optical file servers, mainframes, and support computers networked together using Ethernet technology. The system is composed of two parts which are highly integrated: a full text search system and a patent image retrieval system. When fully deployed, APS will have an image data base of up to 30 terabytes being accessed from over 1000 workstations. The U.S. Patent and Trademark Office (PTO) has had problems with their optical drives, and although they are fairly stable today, we still experience a moderately high hardware failure rate. The optical drive problems include media instability, hardware design errors, vendor problems, and configuration control failures. We intend to purchase additional drives in the future, and are re-evaluating the exclusive use of optical storage in light of recent advances in magnetic storage technology.

关键词： data storage, optical

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Communication of CD-R characteristics such as data integrity, media reliability, and life expectancy to application developers and data users

Communication of CD-R characteristics such as data integrity...

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Conference on Recent advances in Metrology, Characterization, and Standards for optical Digital data Disks

作者： Brown, M Keys, K US EPA Crystal City VA 22202 USA

ISBN: (纸本)081943292X

Communication to application developers and data users of CD-R characteristics such as data integrity, media reliability and life expectancy should be considered as engineers create optical storage media that can store more data. Though the point of view of this paper is primarily based on the views of a few experienced CD-R end-users, optical engineers should consider implementation of the following design recommendations explained in this paper. The authors' extensive experience in using CD-R technology and their substantial interaction with other CD-R users provides a rare perspective on CD-R characteristic information. Although this paper is directed to optical engineers, it is written with the expectation that a broader readership will also benefit from the information presented. The paper presents to the engineering community potential methods of communicating CD-R characteristics with an emphasis on the types of information that would be useful to CD-R users.

关键词： data integrity media reliability life expectancy CD-R DVD-R Orange Book Superfund Environmental Protection Agency (EPA) Office of Emergency and Remedial Response (OERR) characteristic information

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E-beam proximity effect parameters of sub-100nm features

E-beam proximity effect parameters of sub-100nm features

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Conference on advances in Resist technology and Processing XXI

作者： Mountfield, K Eckert, A Yang, XM Johns, E Seagate Res Pittsburgh PA 15222 USA

ISBN: (纸本)0819452890

Understanding the proximity effect is crucial to fabricating repeatable sub-100 nm features for magnetic recording devices. Top down CD-SEM measurements have been used to measure the proximity effect parameters in negative and positive resists at dimensions below 100 nm. The goal of this work is to experimentally determine the values of the parameters alpha, beta and eta and what they depend on.

关键词： E-beam lithography proximity effect data storage thin film heads nanofabrication

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Non-volatile memory for data storage and Neuromorphic Computing

Non-volatile memory for data storage and Neuromorphic Comput...

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2022 International Symposium on Imaging, Sensing, and optical Memory, ODS 2022

作者： Chong, Tow C. Zhao, Rong Singapore University of Technology and Design 8 Somapah Rd Singapore487372 Singapore

Non-volatile memories (NVMs) have revolutionized modern data storage systems, especially boosting the performance of power-latency-sensitive applications. Recently, they have also emerged as an important technical avenue for building neuromorphic computing systems. This plenary will cover recent advances of NVMs and applications in these exciting fields and discuss opportunities and challenges. © IEEE 2022.

关键词： Nonvolatile storage

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