The transmittance and absorbance data of nickel oxide films are crucial in determining it's optical properties. Selection of substrate is important for a greater understanding of optical constants and properties o...
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ISBN:
(纸本)9781479949496
The transmittance and absorbance data of nickel oxide films are crucial in determining it's optical properties. Selection of substrate is important for a greater understanding of optical constants and properties of a material. In view of this Nickel oxide films were deposited on Quartz substrates and it's properties are compared with Nickel oxide films deposited on glass. We show the difference in optical constants measured for Nickel oxide thin film deposited on glass and quartz substrates.
The present general status and future trends in the digital video datastorage and computer datastorage markets are first explained. The role of opticaldatastorage devices for storing the digital video data and com...
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ISBN:
(纸本)0780330293
The present general status and future trends in the digital video datastorage and computer datastorage markets are first explained. The role of opticaldatastorage devices for storing the digital video data and computer data is then briefly discussed and compared with several other storage devices. Finally, the future prospects specifically for DVD or Digital Video Disc and related technologies are explained.
Recent advances have been made in magnetic tape recording technology by making use of a microprocessor to control the servo routines of a low cost half-inch magnetic tape transport. The microprocessor has also been pr...
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Recent advances have been made in magnetic tape recording technology by making use of a microprocessor to control the servo routines of a low cost half-inch magnetic tape transport. The microprocessor has also been programmed to extend the self-diagnostic capability of the transport, to exercise overall control of input/output commands and to provide status information. In addition, the versatility of the in-built microprocessor is made use of during production testing to simplify the test procedures for many analog circuits.
As data demand rises endlessly in the world, continuing exponential growth of data generation, transfer, collection, analysis, and storage is driving and shaping optical communication networks in different ways. The t...
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ISBN:
(纸本)9781538664865
As data demand rises endlessly in the world, continuing exponential growth of data generation, transfer, collection, analysis, and storage is driving and shaping optical communication networks in different ways. The two most notable advances have been wavelength division multiplexing (WDM) and coherent communications, which again continue to evolve and are being combined to create even more advanced networks such as super-channel and flex-grid architectures. Semiconductor diode lasers, as light sources of these systems, must meet an ever more demanding and diverse set of technical specifications. For example, some of the new transmission schemes also require that the wavelength channels are mutually coherent, or locked together in phase.
The advent of cloud computing technology has made its presence effectively felt in various application areas such as business, industry, scientific, administrative, astronomy, high-energy physics, information, educati...
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ISBN:
(纸本)9781479930807
The advent of cloud computing technology has made its presence effectively felt in various application areas such as business, industry, scientific, administrative, astronomy, high-energy physics, information, education etc. Its capability of meeting the various continuously changing demands in all fields makes it increasingly popular. In order to use cloud computing technology, the user has to make him/her familiar with the various facets of the technology through the simulators, which serve as training assets to familiarize the users with the real time scenario. Among the various cloud simulators available, the widely used CloudSim 3.0.3 is considered for analysis. This version of the simulator proposed in the paper uses hard drive storage, with new features in datastorage being included to achieve distributed storage resulting in load balancing across the nodes. The method helps achieve reduction in data migration and mitigate data loss in case nodes crash.
This paper explores the dynamic characteristics of slim optical disk drives and the modification of their structural dynamics to reduce vibration using a simplified finite-element (FE) model. The FE model was construc...
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This paper explores the dynamic characteristics of slim optical disk drives and the modification of their structural dynamics to reduce vibration using a simplified finite-element (FE) model. The FE model was constructed using simplified geometry and valid element types that effectively reflect the dynamic characteristics. The FE model was verified by experimental modal analysis (EMA). Design parameters were extracted and selected to modify the structural dynamics using design of experiments, topology optimization, and modal strain energy distribution. A prototype of the modified model was constructed and its anti-vibration performance was estimated using EMA and comparison of frequency response function.
To keep up with the growing needs for datastorage, new-generation nanophotonic devices are being actively developed, as they have a high potential to meet all the essential industrial requirements. In addition to the...
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ISBN:
(纸本)9798350333466
To keep up with the growing needs for datastorage, new-generation nanophotonic devices are being actively developed, as they have a high potential to meet all the essential industrial requirements. In addition to the high stability and capacity of such systems, it is highly desirable to provide them with additional security features that would protect data from unauthorized reading. However, this usually leads to inevitable and critical complications of existing recording techniques. This work presents a novel and facile technology for hidden datastorage, based on femtosecond laser processing of bilayer gold-silicon films at low energy densities. It is shown that the recorded data can be successfully extracted using photoluminescence signal mapping, while remaining completely invisible in an optical microscope. Furthemore, the use of the investigated procedure for the optical random key generation is also demonstrated. The proposed technology stands out for its simplicity and reliability and, thus, has the potential to be an excellent choice for industrial use in the upcoming era of secure optical communication.
The first numerical simulator for holographic datastorage using the optical collinear system was developed. The dependency of the Signal to Noise Ratio for media displacement and wavelength shift were calculated and ...
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With large storage capacity, low cost and long storage life, optical holographic storagetechnology has great application potential to meet the demands of quick data exchange and cold datastorage. Accurate and standa...
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ISBN:
(数字)9781510650084
ISBN:
(纸本)9781510650084;9781510650077
With large storage capacity, low cost and long storage life, optical holographic storagetechnology has great application potential to meet the demands of quick data exchange and cold datastorage. Accurate and standardized testing procedure of disc storage life about new opticalstorage media materials has become an important challenge. In view of the new opticalstoragetechnology, we discuss and analyze the applicability and limitations of the application of holographic optical disk life test through the existing domestic and foreign disc test standards Because of materials changing in the holographic disc, we propose and optimize an aging test model and test procedure based on several discs aging test models. And also hope to provide a reference for the establishment of life test standards for holographic opticalstorage discs.
The Gigabit Ethernet technology has already been maturity. Compared with other tecknology, Gigabit Ethernet technology possesses higher performance and more convenience realization, so in volume holographic storage (V...
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ISBN:
(纸本)0819451770
The Gigabit Ethernet technology has already been maturity. Compared with other tecknology, Gigabit Ethernet technology possesses higher performance and more convenience realization, so in volume holographic storage (VHM) system, we choose Gigabit Ethernet as channel interface of volume holographic storage.
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