Demands for increased interconnection density and higher bandwidth, coupled with stringent cost constraints of advanced wide bandwidth telecommunication switching and high throughput computer architectures, are exhaus...
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Demands for increased interconnection density and higher bandwidth, coupled with stringent cost constraints of advanced wide bandwidth telecommunication switching and high throughput computer architectures, are exhausting conventional electrical interconnection capabilities. The requirement for greater interconnection capabilities, spawned in part by the advances in integrated circuit technologies and the need for enhanced digital services, dictate that technology advancement must occur in traditional electronic packaging and/or interconnection techniques. The resolution of these technological needs is paramount for the successful competitive introduction of these systems. Presently, a "bottle-neck" occurs at the board-to-board level of the interconnection hierarchy, Therefore, an opportunity exists for the development of new parallel optical interconnection techniques which can be incorporated into system designs beginning at this interconnection level and beyond. The strategic insertion of parallel optical interconnection technology into these electronic processing systems not only meets projected performance requirements, but potentially offers them at a competitive cost.< >
Demands for increased interconnection density and higher bandwidth, coupled with stringent cost constraints of advanced wide bandwidth telecommunication switching and high throughput computer architectures, are exhaus...
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Demands for increased interconnection density and higher bandwidth, coupled with stringent cost constraints of advanced wide bandwidth telecommunication switching and high throughput computer architectures, are exhausting conventional electrical interconnection techniques. The requirement for greater interconnection performance, spawned in part by the advances in integrated circuit technologies and the need for enhanced digital services (such as multi media), dictate that technology advancement must occur in traditional electronic packaging and/or interconnection schemes. Presently a "bottle-neck" occurs at the board-to-board level of the interconnection hierarchy. Therefore, an opportunity exists for the development of new parallel optical interconnection techniques which can be incorporated into system designs beginning at this interconnection level and beyond.< >
The past twenty years has seen the rapid introduction of fiber optic hardware into commercial telecommunications networks because of the cost and performance advantages that the technology provides. The aerospace indu...
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The past twenty years has seen the rapid introduction of fiber optic hardware into commercial telecommunications networks because of the cost and performance advantages that the technology provides. The aerospace industry has also been engaged in research and development to apply the technology to military and commercial aircraft. The specific applications of photonic technology to aircraft can be organized into the following categories: point-to-point fiber optic data transmission to replace copper wiring high speed networks and computer interconnects flight and engine controls generally known as "fly-by-light" smart skins and smart structures. The projected advantages of fiber optic systems are: very high bandwidth (unachievable with wire), EMI/EMP immunity (without the need for additional shielding), weight/volume/cost savings over wire for equivalent high bandwidth applications and elimination of spark induced fire hazards. This paper reviews present applications of fiber optics to aircraft as well as recent significant photonic component and systems advances in both the commercial and military sector which will provide new capabilities which cannot be achieved with wire. Novel components which will be described include improved fibers, cables, connectors, couplers, lasers, amplifiers, modulators, and sensors. Novel broadband network concepts which will be described use multiple fiber channel redundancy to provide built-in fault prediction, isolation, and circumvention without the weight, volume, cost, or performance penalties of alternative wire or fiber approaches. Implementation of systems of this type in both avionics and control systems can provide in-flight diagnostics and real time reconfiguration of the cable plant with elimination or minimization of data loss during reconfiguration. The status of optical backplane development and acceptance of commercial standards for avionics applications will also be discussed. If the aircraft community expends the re
Technological advances over the past two decades have pushed the capacity of optical fiber-based transmission systems into the multi-Gb/s range. The technology that will enable applications requiring Gb/s data transfe...
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Technological advances over the past two decades have pushed the capacity of optical fiber-based transmission systems into the multi-Gb/s range. The technology that will enable applications requiring Gb/s data transfers is emerging from research labs and being deployed in various gigabit testbeds. This paper reviews recent progress made in understanding the most important issues involved in making gigabit networks and applications widely available.< >
Sandia's Photovoltaic technology Laboratory (PTEL) routinely performs outdoor tests of a variety of one-sun and concentrator PV modules. Their experience is that while outdoor testing has its own set of problems, ...
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Sandia's Photovoltaic technology Laboratory (PTEL) routinely performs outdoor tests of a variety of one-sun and concentrator PV modules. Their experience is that while outdoor testing has its own set of problems, it can produce results that are more directly applicable to "field" conditions than testing in solar simulators. They have recently improved both the hardware and software at the PTEL to improve their accuracy and to deal with the special set of problems encountered in outdoor testing. Improvements in hardware include a computer-controlled solar tracker that allows them to test solar cell arrays up to 21 m/sup 2/ in size; infrared imaging of modules; and electronic loads that allow them to test components with outputs up to 1,800 watts. Improvements in software include real-time monitoring of data collection; a relational database that has improved the reliability of test setups, operations and analyses; and a standardized reporting process that relates module performance to a number of environmental parameters.< >
Recent advances have made opticaldata links reality and point the way toward broader optics applications in the computers of the future. Researchers have investigated both analog and digital computing devices and rep...
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Recent advances have made opticaldata links reality and point the way toward broader optics applications in the computers of the future. Researchers have investigated both analog and digital computing devices and reported wide-ranging progress, particularly in the areas of communication and secondary datastorage such as fiber links and CR ROMs. The author summarizes progress in this field.
data integrity is a primary concern for the users of any datastorage medium. For opticaldatastorage, the integrity is directly related to the performance and defect level of the storage media and to how they change...
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data integrity is a primary concern for the users of any datastorage medium. For opticaldatastorage, the integrity is directly related to the performance and defect level of the storage media and to how they change as the media age. While media materials and thin-film stack designs are chosen with the goal of achieving high data integrity and reliability, variations in the media manufacturing processes themselves often can determine how the media will behave. These variations can be found through detailed and careful characterization testing. In this paper, we will describe some of the test methods used in this laboratory for characterizing rewriteable media and discuss some results obtained while surveying commercially available media.
Progress of opticaldatastoragetechnology and application systems, which have been obtained recent years in Tsinghua University, are reviewed. In this paper, the new multifuction optical drive, miniaturizational opt...
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This second conference volume contains 12 papers covering various aspects of opticalstoragetechnology. storage media selection, optimization, fabrication, and behavior in actual operational scenarios are the main to...
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This second conference volume contains 12 papers covering various aspects of opticalstoragetechnology. storage media selection, optimization, fabrication, and behavior in actual operational scenarios are the main topics covered.
The advanced development and characteristics of a new high resolution, high frame rate, reflected mode MOSLM is reported. This effort is aimed at the production of Miniature Ruggedized optical Correlators. The device ...
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ISBN:
(纸本)0819408697
The advanced development and characteristics of a new high resolution, high frame rate, reflected mode MOSLM is reported. This effort is aimed at the production of Miniature Ruggedized optical Correlators. The device research and process development is being performed at Carnegie Mellon University NSF datastorage System Center (formerly Magnetic technology Center) under contract from Litton data Systems. Pixel size is under one mil center to center, one third the dimension of present transmission mode evaluation devices. This development includes optimization of the optical and functional characteristics of the MOSLM for Mil Spec Systems.
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