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conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists conference - 2000 (Cat. No.00CH37036)

作者： D. Cunningham K. Davies L. Grammond E. Mopas N. O'Connor M. Rubcich M. Sadeghi D. Skinner T. Trumbly BP Solar Fairfield CA USA

ISBN: (纸本)0780357728

This paper describes the work performed at BP Solar, Fairfield, California highlighting advances in the Apollo(R) CdTe technology. The paper describes the eight basic process steps involved in making the module. The state of the art CdTe reactor is also detailed with its sophisticated design and control features. Various techniques were utilized to characterize the semiconductor materials. Using AFM and X-ray diffraction, the morphology and crystallographic properties of the films were investigated. This work showed the grain structure was small, even after post deposition air anneals. optical characterization determined quantum efficiency of the device and helped optimize window layer thickness for record performances. NREL confirmed module efficiency of 10.8% is reported for a 0.55m/sup 2/ module and a maximum power of 91.5 W for a 0.94m/sup 2/ monolithic module. Indoor stress testing and outdoor performance test beds are also described. The data presented shows good indoor stability at various stress conditions.

关键词： optical films Stress Testing Inductors Semiconductor materials X-ray diffraction optical diffraction Morphology Crystallography Semiconductor films

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A New Node Architecture for Scalable Wavelength Label Switching Networks Using MPLS

A New Node Architecture for Scalable Wavelength Label Switch...

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2000 2nd International conference on Microwave and Millimeter Wave technology

作者： Rong Xu YueFeng Ji Qian Gong Peida Ye P.O.Box 128 Optical Communications Center Beijing University of Posts and Telecommunications

This paper presented a novel approach integrated recent advances in MPLS traffic engineering with wavelength switch/routing technologies to achieve optical interconnect for IP-centric data *** node architecture for scalable wavelength label switching networks(WLSnet) is proposed,which supported label switching and wavelength *** paper showed this network add more flexible routing,traffic engineering,and explicit routes via MPLS,is the best way to realize optical interconnects and to reduce management complication and cost of *** have shown an approach to dynamically interconnect routers via wavelength,including a bypass routing in the node,by this way new wavelengths may easily be introduced to the network at a reasonable *** approach also paves the way for the eventual incorporation of DWDM multiplexing capabilities in IP routers,and establishes a preliminary framework for the notion of an optical Internet.

关键词： A New Node Architecture for Scalable Wavelength Label Switching Networks Using MPLS WDM

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Near-field characterization of micro-aperture surface emitting laser for near field data storage

Near-field characterization of micro-aperture surface emitti...

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IEEE Photonics conference (IPC)

作者： S. Shinada F. Koyama N. Nishiyama M. Arai K. Iga P&I Microsystem Research Center Tokyo Institute of Technology Yokohama Japan

Summary form only given. We have fabricated a 400 nm square micro-aperture VCSEL with single transverse mode operation. We carried out the near field characterization using a sharpened fiber probe. The FWHM of intensity below threshold was 250 nm, and our metal micro-aperture VCSEL may have a potential for a high resolution optical head.

关键词： Surface emitting lasers Memory Probes

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Optimizing multiphoton chemistry for 3D optical processes and technologies

Optimizing multiphoton chemistry for 3D optical processes an...

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Quantum Electronics and Laser Science conference (QELS)

作者： J.W. Perry S. Ananthavel S.M. Kuebler S.R. Marder M. Rumi F. Stellacci B.H. Cumpston A.A. Heikal J.E. Ehrlich L.L. Erskine M. Lipson D. McCord-Maughton H. Rockel University of Arizona Tucson AZ US Dept. of Chem. Arizona Univ. Tucson AZ USA

ISBN: (纸本)1557526087

Summary form only given. Two-photon excitation provides a means of activating chemical or physical processes with high spatial resolution in three dimensions and has enabled the development of 3D fluorescence imaging, 3D optical data storage, and 3D lithographic microfabrication. We have developed a wide array of chromophores which hold great promise for two-photon applications. These molecules are based on a donor-/spl pi/-donor, donor-acceptor-donor, or acceptor-donor-acceptor structural motifs. The magnitude of the two-photon absorption cross section and the position of the two-photon absorption maximum can be controlled by varying the length of the conjugated bridge and by varying the strength of the donor and acceptor groups. In this way, chromophores have been developed which exhibit strong two-photon absorption in the range of 500-975 nm.

关键词： Chemistry Chemical technology Absorption Chemical processes Spatial resolution Fluorescence High-resolution imaging optical imaging Memory Bridges

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A 550 Mb/s GMR read/write amplifier using 0.5 /spl mu/m 5 V CMOS process

A 550 Mb/s GMR read/write amplifier using 0.5 /spl mu/m 5 V ...

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IEEE International conference on Solid-State Circuits (ISSCC)

作者： S. Lamb L. Cheng D. Young Marvell Semicond. Inc. Sunnyvale CA USA Marvell Semiconductor Inc. Sunnyvale CA USA

The read/write amplifier is one of the key components in hard disk drive (HDD) design. Traditionally, BiCMOS technology has been the main stream process for preamplifier design. However, with recent advances in CMOS processing, CMOS implementation is more cost-effective and more suitable for chip on suspension due to smaller die size, and is high-performance in terms of noise, gain accuracy, channel-to-channel matching, bandwidth, PSSR and write-current rise/fall time. The 8-channel read/write amplifier is fabricated in a 0.5 /spl mu/m 5 V double-poly, double-metal CMOS process. Coupled with an advanced write head, this high performance read/write amplifier supports >550 Mb/s data rate.

关键词： CMOS process Voltage Bandwidth Low-noise amplifiers Driver circuits Circuit noise Temperature sensors Parasitic capacitance Noise level Semiconductor optical amplifiers

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Transient analysis of pulsed charging in supercapacitors

Transient analysis of pulsed charging in supercapacitors

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IEEE Region 10 International conference TENCON

作者： N. Khan N. Mariun M. Zaki L. Dinesh Department of Electrical and Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of Chemistry Faculty of Science Serdang Selangor Darul Ehsan Malaysia

Transient voltage/current pulses cannot be stored into normal DC batteries. This work reviews possibility of storing these surges using supercapacitor. Laser induced plasma may be caused by firing laser pulses into the clouds charge clusters. The charge pulses flow down along the laser induced air wire (LIAW) and passes through a supercapacitor to charge it. Objective of this study is to test the possibility of storing these charges using supercapacitors. Energy storage in solid state electrochemical capacitors (supercapacitors) or ultra supercapacitors occurs through reversible oxidation-reduction (redox) reactions. Contribution of double layer is less significant, however, a major percentage of total energy stored is attributed to reversible surface redox reactions. Different types of supercapacitors have been analyzed regarding their charge and discharge performance under repetitively charging pulses. The authors' initial analysis based on existing mathematical techniques, shows that a real superconductor may charge under transient conditions at a much higher rate but subsequent considerations based on mathematical analysis and available data on supercapacitors technology, lead us to new recommendations to improve the design of supercapacitor to perform as an ultrasupercapacitor.

关键词： Transient analysis Supercapacitors optical pulses Performance analysis Voltage Batteries Surges Plasmas Clouds Wire

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Status of international optical disk standards

Status of international optical disk standards

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

作者： Chen, D Neumann, J Chen & Associates Consulting Mound MN 55364 USA

ISBN: (纸本)081943292X

The authors wish to dedicate this paper to the late Mr. Patrick Sandell, the past Chairman of B11, whose stewardship of the optical disk standards activities in the past years produced much of the fruit which we will all enjoy. His leadership and contribution will be remembered for yeats to come. optical technology for data storage offers media removability with unsurpressed reliability. As the media are removable, data interchange between the media and drives from different sources is a major concern. The optical recording community realized, at the inception of this new storage technology development,that international standards for all optical recording disk/cartridge must be established to insure the healthy growth of this industry and for the benefit of the users. Many standards organizations took up the challenge and numerous international standards were established which are now being used world-wide. This paper provides a brief summary of the current status of the international optical disk standards.

关键词： optical recording international standards

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Trends in optical recording

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JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 1999年第1-3期193卷 519-525页

作者： Borg, HJ van Woudenberg, R Philips Res Labs NL-5656 AA Eindhoven Netherlands

optical recording technology is evolving rapidly, driven by the demands of higher storage capacities and increasing data rates. In this contribution, we discuss the technology roadmap of optical disc recording. The emphasis will be on rewritable optical recording, in particular, phase change recording. (C) 1999 Elsevier Science B.V. All rights reserved.

关键词： optical recording phase change recording magneto-optical recording

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Digital data storage and encryption using a phase-coded holographic memory system

Digital data storage and encryption using a phase-coded holo...

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advances in Photorefractive Materials, Effects and Devices, APMED 1999

作者： Denz, Cornelia Miiller, Kai-Oliver Visinka, Franz Tschudi, Theo Institute of Applied Physics Darmstadt University of Technology Hochschulstr. 6 DarmstadtD-64289 Germany

ISBN: (纸本)1557526060

We present the experimental realization of a compact and fully automized volume holographic memory based on phase-coded multiplexing that is capable of both, high-resolution analog image and digital data storage, having a storage capacity of up to 480 data pages in a single interaction region of a photorefractive LiNb03 crystal. The system architecture, its implementation, and its performance are described, with emphasize on the realization of digital data storage. Moreover, the possibility of data encryption using a supplementary random phase modulation of the reference beam is investigated. OCIS codes: (210.0210) optical data storage;(210.4680) optical memories;(210.2860) holographic and volume memories;(090.7330) volume holographic gratings;(160.5320) photorefractive material;(160.3730) Lithium Niobate;(999.999) data encryption. © 1999 optical Society of America.

关键词： Niobium compounds

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Microscopic image analysis of defect areas in optical disks

Microscopic image analysis of defect areas in optical disks

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

作者： L'Hostis, P Byers, F Podio, F Tang, X Natl Inst Stand & Technol Informat Technol Lab Gaithersburg MD 20899 USA

ISBN: (纸本)081943292X

This paper presents techniques developed at the Information technology Laboratory of the US National Institute of Standards and technology (NIST / ITL) for enabling microscopic image analysis of optical data storage media such as optical disks. These non-destructive techniques allow investigators to easily locate on the media a pre-existing series of media defects. These techniques can be applied to any type of optical disks including CDs and DVDs. The paper describes the experimental setup and the techniques utilized to achieve localization and registration of media defects. These techniques include data acquisition, computer control, auto focus, image processing, and remote control and observation. An extension of this setup utilizing available graphical programming environments can allow investigators at different locations to share and discuss the information on media defects by use of the Internet.

关键词： CD DVD microscopic defect analysis microscopic image processing optical disks measurements data storage media defects analysis

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