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621.39 --- datacommunicatie --- elektrotechniek --- frequentie-modulatie --- modulatie --- optische vezels --- telecommunicatie --- televisie --- Telecommunicatie
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Next generation optical communication systems will have to transport a significantly increased data volume at a reduced cost per transmitted bit. To achieve these ambitious goals optimum design is crucial in combination with dynamic adaptation to actual traffic demands and improved energy efficiency. In the first part of the book the author elaborates on the design of optical transmission systems. Several methods for efficient numerical simulation are presented ranging from meta-model based optimization to parallelization techniques for solving the nonlinear Schrödinger equation. Furthermore, fast analytical and semi-analytical models are described to estimate the various degradation effects occurring on the transmission line. In the second part of the book operational aspects of optical networks are investigated. Physical layer impairment-aware routing and regenerator placement are studied. Finally, it is analyzed how the energy efficiency of a multi-layer optical core network can be increased by dynamic adaptation to traffic patterns changing in the course of the day.
Spectrometric and optical chemical analysis --- Mass communications --- Computer. Automation --- beeldverwerking --- optische vezels --- communicatietechnologie --- signaalverwerking --- spectrometrie
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Dispersion management is a critical design criterion that characterizes the performance of an optical network, and has impacted almost every aspect of the physical layer of an optical transmission line. The past 10 years have seen an explosion in the variety of device effects exploited to obtain optimal performance from dispersion compensators, and this is the first book that deals exclusively with this technology. It starts with an exposition on the fundamental physics underlying dispersion and its effects on optical pulses, followed by at least one chapter devoted to each of the fiber-based dispersion-compensating devices that have either been deployed or are considered as serious candidates for future networks. The final section of this book then describes the systems-level impact of these devices, hence providing a one-stop reference for all aspects of optical-communication-network design pertaining to dispersion-management. Each chapter is written by the leading experts in the field, drawn from both academia as well as industry.
Electronics and optics of solids --- Mass communications --- optische vezels --- communicatietechnologie --- optica
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Fiber Optics Engineering discusses the theoretical and practical backgrounds of fiber optics while including insights that are usually gained with experience. The author provides an introduction to the area of fiber optics engineering. The text is straightforward, and complex mathematical equations are kept to a minimum. Fundamental ideas are discussed in the first few introductory chapters. These include concepts such as the nature of light, foundations of fiber optics, analysis of electrical and optical signals and telecommunication networks. The critical blocks in a fiber optic system, diode lasers, optical fibers, photodetectors, and passive components, each have a dedicated chapter. The text examines optical transceivers from an electronics and circuit perspective. Emphasis is placed on circuit design and signal integrity, as related to optical transmission and reception. Included also are chapters on test and measurement, reliability, and standards. Fiber Optics Engineering provides a valuable reference point both for those who want to become familiar with fiber optics as a fast evolving technology and for engineers who want to apply the material in an industrial design environment.
Spectrometric and optical chemical analysis --- Mass communications --- Computer. Automation --- beeldverwerking --- optische vezels --- communicatietechnologie --- signaalverwerking --- spectrometrie
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Electronics and optics of solids --- Mass communications --- optische vezels --- communicatietechnologie --- optica
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Optics. Quantum optics --- Telecommunication technology --- kabels --- glasvezel --- optische communicatie --- optische vezels
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Spectrometric and optical chemical analysis --- Mass communications --- Computer. Automation --- beeldverwerking --- optische vezels --- communicatietechnologie --- signaalverwerking --- spectrometrie
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Spectrometric and optical chemical analysis --- Mass communications --- Computer. Automation --- beeldverwerking --- optische vezels --- communicatietechnologie --- signaalverwerking --- spectrometrie
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This book reviews recent important advances in the use of optical coherence tomography (OCT) in order to analyze neurodegeneration within the retina through the quantification of axonal loss. Detailed information is provided on the role of OCT as a promising tool for the evaluation of disease progression in numerous neurodegenerative disorders and as a biological marker of neuroaxonal injury. The disorders considered include multiple sclerosis, Parkinson’s disease, Alzheimer’s disease, intracranial hypertension, Friedreich’s ataxia, schizophrenia, hereditary optic neuropathies, glaucoma, and amblyopia. Individual chapters are also devoted to OCT technique, new OCT technology in neuro-ophthalmology, OCT and pharmacological treatment, and the use of OCT in animal models. As well as being a valuable tool for diagnosis of many retinal diseases and monitoring of surgical and medical treatment, OCT allows study of the retinal nerve fiber layer (RNFL) containing the axons of the retinal ganglion cells, which form the optic nerves, chiasm, and optic tracts. Since retinal axons are nonmyelinated until they penetrate the lamina cribrosa, the RNFL is an ideal structure for visualization of any process of neurodegeneration, neuroprotection, or regeneration. It is for this reason that OCT has been applied in various areas of neurology over the past decade, becoming a hot topic and generating great enthusiasm among neurologists and ophthalmologists. By documenting the ability of OCT to provide key information on CNS diseases, this book illustrates convincingly that the eye is indeed the “window to the brain”.
Physical methods for diagnosis --- Neuropathology --- Ophthalmology --- optische vezels --- farmacologie --- hersenen --- oftalmologie --- radiologie --- medische beeldvorming
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Electronics and optics of solids --- Computer architecture. Operating systems --- glasvezel --- optische vezels --- computernetwerken