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NATURE PHOTONICS 2011年第4期5卷 222-229页

作者： Giovannetti, Vittorio Lloyd, Seth Maccone, Lorenzo Scuola Normale Super Pisa NEST I-56126 Pisa Italy CNR Ist Nanosci I-56126 Pisa Italy MIT Elect Res Lab Cambridge MA 02139 USA MIT Dept Mech Engn Cambridge MA 02139 USA Univ Pavia Dip Fis A Volta Ist Nazl Fis Nucl Sez Pavia I-27100 Pavia Italy

The statistical error in any estimation can be reduced by repeating the measurement and averaging the results. The central limit theorem implies that the reduction is proportional to the square root of the number of repetitions. Quantum metrology is the use of quantum techniques such as entanglement to yield higher statistical precision than purely classical approaches. In this Review, we analyse some of the most promising recent developments of this research field and point out some of the new experiments. We then look at one of the major new trends of the field: analyses of the effects of noise and experimental imperfections.

关键词： Imaging and sensing Fundamental optical physics Quantum optics nature photonics Nature Photonics nature publishing group content journal optoelectronics optics biophotonics quantum optics cryptography spectroscopy terahertz technology light propagation lasers LEDs photovotaics fibre optics optical data storage

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optical arbitrary waveform processing of more than 100 spectral comb lines

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NATURE PHOTONICS 2007年第8期1卷 463-467页

作者： Jiang, Zhi Huang, Chen-Bin Leaird, Daniel E. Weiner, Andrew M. Purdue Univ Sch Elect & Comp Engn W Lafayette IN 47907 USA

Pulse-shaping techniques, in which user-specified, ultrashort-pulse fields are synthesized by means of parallel manipulation of optical Fourier components, have now been widely adopted(1-6). Mode-locked lasers producing combs of frequency-stabilized spectral lines have resulted in revolutionary advances in frequency metrology(7-11). However, until recently, pulse shapers addressed spectral lines in groups, at low spectral resolution. Line-by-line pulse shaping(12), in which spectral lines are resolved and manipulated individually, leads to a fundamentally new regime for optical arbitrary waveform generation(13), in which the advantages of pulse shaping and of frequency combs are exploited simultaneously. Here we demonstrate programmable line-by-line shaping of more than 100 spectral lines, which constitutes a significant step in scaling towards high waveform complexity. optical arbitrary waveform generation promises to have an impact both in optical science ( allowing, for example, coherent control generalizations of comb-based time - frequency spectroscopies(10)) and in technology (enabling new truly coherent multiwavelength processing concepts for spread-spectrum lightwave communications and light detection and ranging, lidar).

关键词： nature photonics Nature Photonics nature publishing group content journal optoelectronics optics biophotonics quantum optics cryptography spectroscopy terahertz technology light propagation lasers LEDs photovotaics fibre optics optical data storage

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NOVEL MATERIALS FOR IMPROVED optical DISK LIFETIME.

NOVEL MATERIALS FOR IMPROVED OPTICAL DISK LIFETIME.

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advances in Laser Scanning technology.

作者： Aisenberg, S. Stein, M.

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Analog image storage using charge-coupled devices

Analog image storage using charge-coupled devices

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Recent advances in TV Sensors and Systems 1979

作者： Roberts, A. Hirschberg, I. Wen, D. Fairchild Camera and Instrument Corporation 300 Bobbins Lane Syosset L. I.NY11791 United States

Charge-Coupled Device (CCD) area image detectors of the interline-transfer type include a design feature which enables analog image data to be electrically inserted into the vertical registers via a horizontal input register and, when the device is adequately cooled, this data can be temporarily stored in the vertical registers. Such analog storage devices have been successfully used in several R&D programs performing functions such as TV scan rate reduction, background cancellation in chopper operated pyroelectric vidicons and precision TV field delay for image processing. The results from these programs, consolidated with other CCD technology advances, form the basis for a new program now in progress at Fairchild Camera and Instrument Corp. sponsored by the Night Vision and Electro optical Laboratory. This program has as its objective the development of an Analog TV Scan Rate Converter and its primary storage element, a two-dimensional analog storage charge-coupled device containing 640 X 256 storage sites, The scan rate converter is intended to interface with TV data compression systems and other systems which require a large two-dimensional analog memory plane. This paper describes the Analog TV Scan Rate converter and the storage CCD under development. The current status of analog image storage using charge-coupled devices is reviewed and potential applications are explored. © 1979 SPIE. All rights reserved.

关键词： Charge coupled devices

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Technical advances in volume holographic memories

Technical advances in volume holographic memories

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作者： King, Brian Michael The University of Arizona

学位级别：Ph.D.

Volume holographic memories (VHMs) are a candidate technology for next-generation high-density and high data-rate digital storage. Capacities greater than 1 Terabit are promised, available at read-out rates exceeding 1 Gigabit per second. The capacity target will be achieved through two mechanisms. First, retrieval in a VHM reconstructs a holographic page (a two-dimensional image) captured on a CCD (charge-coupled device) camera. Each page represents on the order of one million bits of data, by encoding the data as bright and dark pixels in the 1024 x 1024 stored/retrieved image. Second, due to the thickness of the recording medium, a large number of such pages can be recorded in the same volume of material. In this dissertation we address some of the difficult technical issues that either currently limit the VHM system design, or are expected to become a limiting factor in the future. The first such concern involves how to process the simultaneous optical arrival of one million pixels. In high-density storage, there will be significant cross-talk between pixels which limits the storage capacity. We develop a novel highly-parallel focal-plane processor, which can significantly improve the system capacity by performing reliable detection in the presence of optical blur and alignment errors introduced by the imaging system. A fabricated proof-of-concept VLSI design is described. Another fundamental noise source is caused by the cross-talk between holographic pages. Reconstruction of the desired data page reconstructs every page in the memory, albeit at a very low relative diffraction efficiency. As the number of multiplexed pages increases, the cross-talk from the other pages can constitute a significant optical field noise source. Apodization seeks to either suppress this noise source or control it such that system tolerances can be relaxed. Bright data pixels are stored by altering the material properties of the crystal. However, dark pixels require no adjustment to

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ERROR MANAGEMENT TECHNIQUES FOR optical DISK SYSTEMS.

ERROR MANAGEMENT TECHNIQUES FOR OPTICAL DISK SYSTEMS.

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advances in Laser Scanning technology.

作者： Corsover, S.L. Thomas, C.H.

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Low-cost silicon receiver OEICs

Low-cost silicon receiver OEICs

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Conference on advances in Microelectronic Device technology

作者： Zimmermann, H Dietrich, H Vienna Univ Technol Inst Elect Measurement & Circuit Design A-1040 Vienna Austria

ISBN: (纸本)0819443395

The state of the art of silicon optoelectronic integrated circuits (OEICs) is described. It is verified that silicon OEICs achieve both high sensitivities and high bandwidths up to the GHz range. Silicon OEICs, therefore, compete successfully with III/V OEICs for low-cost high-volume applications. Results of advanced monolithically integrated photodiodes available in CMOS and BiCMOS technologies are presented. The technological aspects for the monolithic integration of photodiodes are addressed and tile properties of the so-called double photodiode and of the pin photodiode are described. Tile innovative integrated double photodiode allowing data rates of 622 Mb/s is available in standard silicon technologies without any process modification, For the integration of tile pin photodiode allowing data rates of higher than I Gb/s usually at least one additional mask is required. It will be shown that the pin photodiode also can be implemented without an additional mask. The second main part of this article covers circuits of optical fiber and interconnect receivers with data rates of up to 1 Gb/s as well as advanced DVD pick-up OEICs with bandwidths of up to 150 MHz. Tile fiber receivers achieve an effective transimpedance of 45.9 kOmega and the sensitivity of this OEIC in a 1.0 pm CMOS technology with a data rate of 1 Gb/s is improved by 9 dB compared to that of a published OEIC in a 0.35 pm CMOS technolgy.

关键词： integrated optoelectronics optoelectronic devices optoelectronic integrated circuits optical receivers optical storage systems. integrated photodiodes Si

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Performance Evaluation of Iterative Channel Codes for Digital data storage on Microfilm

Performance Evaluation of Iterative Channel Codes for Digita...

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IEEE Global Telecommunications Conference (GLOBECOM 2010)

作者： Pflug, Florian Voges, Christoph Fingscheidt, Tim Tech Univ Carolo Wilhelmina Braunschweig Inst Commun Technol D-38106 Braunschweig Germany

ISBN: (纸本)9781424456383

In the past few years microfilm has gained new research interest as a medium for long-term storage of digital data. This became particularly possible by recent advances in laser film recording technology. In contrast to other optical or magnetic storage media, the microfilm digital channel (MDC) still has been subject to characterization in only a few publications. In this paper we investigate iterative channel codes for the MDC, in particular low-density parity-check and turbo convolutional codes. Simulation results show that practically error-free storage can be achieved with code rates even above 0.85 on a monochrome MDC with binary amplitude-shift keying modulation.

关键词： amplitude shift keying binary amplitude-shift keying modulation binary codes convolutional codes digital data storage iterative channel codes iterative decoding laser film recording low density parity check code magnetic storage magnetic storage media mic

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optical archive organization and strategies for the 1990s

Optical archive organization and strategies for the 1990s

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Medical Imaging III: PACS System Design and Evaluation 1989

作者： Britt, Margaret O. Ricca, Stephen P. Rocca, Jeffrey J. Sicherman, George L. AT and T Bell Laboratories NJ07764 United States

The advent of second-generation optical storage technology and user experience with PACS dictate a new look at PACS long-term database organization and optical archive strategy. optical disk drives are growing faster and more reliable, disks and jukeboxes will hold more data for their size, and the cost per byte of optical disk storage will fall. Users are becoming more sophisticated in their use of PACS. Field experience has increased our knowledge of user needs and refined our models of optical archive usage. Cdnsidering these advances, this paper addresses such topics as centralized archives. standards and equipment compatibility, flexible archival and de- A rchival criteria, data reliability, backup strategies, and improved archive performance. © 1989 Proceedings of SPIE - The International Society for optical Engineering. All rights reserved.

关键词： optical disk storage

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Study on site selection for pumped-storage power plants, wind farms, and photovoltaic power plants 8

Study on site selection for pumped-storage power plants, win...

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8th International Symposium on advances in Electrical, Electronics, and Computer Engineering, ISAEECE 2023

作者： Jiang, Qi Chen, Zhixu Sun, Ping Wang, Lei PowerChina Beijing Engineering Corporation Limited Beijing China North China Branch Of State Grid Corporation Of China Beijing China State Grid Xin Yuan Company Limited Beijing China

ISBN: (纸本)9781510666290

Based on the actual engineering perspective, this paper presents the site of pumped storage power plants, which is determined by collecting and processing elevation data, river system data, road data, meteorological data, building a river system model, optimizing the dam axis model, calculating indexes and matching upper and lower reservoirs to propose a site for pumped storage power plants. We have constructed a comprehensive evaluation system to determine the location of pumped storage plants, wind farms, and photovoltaic plants to provide reference suggestions and research ideas for the initial selection of a new energy base that integrates wind and storage. © 2023 SPIE. All rights reserved.

关键词： Pumped storage power plants

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