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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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Multi-dimensional optical data writing techniques for cloud-scale archival storage 28

Multi-dimensional optical data writing techniques for cloud-...

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Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII 2023

作者： Anderson, Patrick Aranas, Erika Black, Richard Bucciarelli, Stefano Caballero, Marco Cameron, Pashmina Canakci, Burcu Chatzieleftheriou, Andromachi Clegg, James Cletheroe, Daniel Cooper, Bridgette Deegan, Tim Donnelly, Austin Drevinskas, Rokas Gkantsidis, Christos Diaz, Ariel Gomez Haller, Istvan Heard, Philip Ilieva, Teodora Joyce, Russell Legtchenko, Sergey Magalhaes, Bruno Ogus, Aaron Rowstron, Ant Sakakura, Masaaki Schreiner, Nina Smith, Adam Stefanovici, Ioan Sweeney, David Wainman, Phil Whittaker, Charles Williams, Hugh Winkler, Thomas Winzeck, Stefan Microsoft Research Cambridge United Kingdom

ISBN: (纸本)9781510659216

The demand for long-term data storage in the cloud grows continuously into the zettabytes. Operating at such scales requires a fundamental re-thinking of how we build large-scale storage systems to archive data in a sustainable and cost-effective manner. In Project Silica, a storage technology for the cloud is being designed and developed from the media up by leveraging the recent progress in ultrafast laser nano-structuring of the transparent media. Together with the advances in reading, decoding and error correction processes, high-density and high-throughput multi-dimensional volumetric optical data writing is achieved, enabling successful end-to-end proof-of-concept demonstrations of the technology. With exceptional media longevity, this could transform archival cloud storage. Here we briefly discuss the development of the technology, key metrics for cost-efficient optical data storage at scale, and successful proof-of-concept demonstrations. © 2023 SPIE.

关键词： Cost effectiveness

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data RECOVERY FROM PROPRIETARY-FORMATTED CCTV HARD DISKS

DATA RECOVERY FROM PROPRIETARY-FORMATTED CCTV HARD DISKS

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9th IFIP Working Group 11.9 International Conference on Digital Forensics

作者： Ariffin, Aswami Slay, Jill Choo, Kim-Kwang Univ S Australia Adelaide SA 5001 Australia Namibia Univ Sci & Technol Execut Dean Informat Technol Windhoek Namibia Univ South Australia Forens Computing Adelaide SA Australia

ISBN: (纸本)9783642411472;9783642411489

Digital video recorders (DVRs) for closed-circuit television (CCTV) commonly have an in-built capability to export stored video files to optical storage media. In the event that a DVR is damaged, its contents cannot be easily exported. This renders the forensically-sound recovery of proprietary-formatted video files with their timestamps from a DVR hard disk an expensive and challenging exercise. This paper presents and validates a technique that enables digital forensic practitioners to carve video files with timestamps without referring to the DVR hard disk filesystem.

关键词： Digital CCTV forensics video stream data carving

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RECORDING AND READOUT TESTING OF optical RECORDING MATERIALS.

RECORDING AND READOUT TESTING OF OPTICAL RECORDING MATERIALS...

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advances in Laser Scanning technology.

作者： Cheng, David

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ERASABLE optical DISK MATERIALS EVALUATION.

ERASABLE OPTICAL DISK MATERIALS EVALUATION.

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advances in Laser Scanning technology.

作者： Ralston, Lynda M.

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Recent advances in optical media manufacturing technology

Recent advances in optical media manufacturing technology

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Proceedings of the 1999 Joint International Symposium on optical Memory and optical optical data storage (ISOM/ODS'99)

作者： Bartholomeusz, Brian J. Multi Media Masters and Machinery Los Altos United States

A variety of CD and DVD recordable and rewritable disc formats have or shortly will transition into mass market products. Apart from the inherent manufacturing complexity, this development has created very demanding requirements on unit manufacturing cost, production yields, and quality. The dynamic storage marketplace has placed additional, constantly evolving demands on product capabilities. All of this is reflected in the current approach to optical disc manufacturing equipment through their emphasis on modularity, flexibility, and upgradeability. The developments in the CD-R arena encapsulate and serve to highlight these issues and will be used as a case study.

关键词： optical disk storage

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Progress toward the commercial realization of high performance holographic data storage

Progress toward the commercial realization of high performan...

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Organic Holographic Materials and Applications III

作者： Curtis, K. Anderson, K. Fotheringham, E. Weaver, S. Ihas, B. Hill, A. Dhar, Lisa Wilson, William L. InPhase Technologies 2000 Pike Road Longmont CO 80501

The promise of using volume holography to deliver high performance optical storage systems is at hand. The possibility of extremely large storage capacities and fast transfer rates make holographic storage ideal for high performance video applications. An overview of advances at InPhase Technologies is presented. Progress toward high-density implementations as well as the development of a functional prototype is presented. These systems are the first fully functional holographic recordable drives developed. Their development paves the way for the commercialization of this technology.

关键词： data storage equipment

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NASA Technical Reports Server (Ntrs) 20080039417: Recent advances in Photonic Devices for optical Computing and the Role of Nonlinear Optics-Part II

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2017年

NASA Technical Reports Server (Ntrs) 20080039417: Recent advances in Photonic Devices for optical Computing and the Role of Nonlinear Optics-Part II by NASA Technical Reports Server (Ntrs); published by

关键词： (ntrs) 20080039417: abdeldayem, hossin advances banks, curtis e. computing data storage devices frazier, donald o. light modulators logic circuits nasa technical reports server (ntrs) nonlinear optics optical data processing optical materials optoelectronic devices paley, mark s. photonics technology assessment witherow, william k.

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A distributed photonic crystal fiber reverse design framework based on multi-source knowledge fusion

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optical FIBER technology 2024年 84卷

作者： Ren, Sufen Chen, Shengchao Wang, Jiahao Xu, Haoyang Hou, Xuan Huang, Mengxing Liu, Jianxun Wang, Guanjun Hainan Univ State Key Lab Marine Resource Utilizat South China Haikou 570228 Peoples R China Hainan Univ Sch Informat & Commun Engn Haikou 570228 Peoples R China Huazhong Univ Sci & Technol Wuhan Natl Lab Optoelect Wuhan 430074 Peoples R China Univ Technol Sydney FEIT Sch Comp Sci Australian AI Inst Sydney NSW Australia

Recent advances in artificial intelligence (AI) have inspired researchers to explore machine learning (ML)based optimization and reverse design techniques for photonic crystal fibers (PCFs). These studies often seek to improve model generalization, particularly for data that the model has not previously encountered. Traditional centralized training methods are challenging for devices with limited resources, as they rely on aggregating expansive datasets, which is hindered by constraints in storage capacity and communication efficiency. This paper introduces an innovative distributed framework for optimizing PCF parameters, utilizing decentralized training to amalgamate knowledge across various institutions while maintaining data privacy. Each institution develops a lightweight neural network using a small subset of local data, contributing to the construction of a collective and robust global model. This approach is advantageous for both internal and external applications in PCF engineering. Rigorous empirical experiments conducted with real-world PCF optimization data substantiate the efficacy and benefits of the proposed framework. This framework shows promise in achieving an equilibrium between data protection and resource efficiency, offering a novel platform for the reverse design of microstructured optical fibers.

关键词： PCF reverse design Distributed optimization framework Machine learning data-decentralized training Neural network

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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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