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A re-working of C.D. Chaffee's previously published The Rewiring of America (Academia, 1988), this professional book describes the fiber optics revolution. There have been many changes in the fiber optics field since the book's first publication. These include advances in optical networking; the additional bandwidth created by the Internet and associated data services; liberalization of the global telecommunications industry; and the rewiring of the world's oceans with fiber optics. Building the Global Fiber Optics Superhighway details all these developments. C.D. Chaffee writes: `One thing is clear: as our networks become primarily data-driven, they need to be built differently, to be able to handle data first, but also voice. It is a different way of looking at the world.'
This book provides a detailed description of Japan’s telecommunications policies. It discusses how Japan has addressed a variety of policy challenges ranging from traditional regulatory issues, such as the provision of a universal service, to the latest tasks, including the promotion of cutting-edge technologies. Japan is a global leader in information and communication technologies (ICT). In addition to technological advances, an impressive nationwide optical-fiber and advanced mobile network infrastructure has been developed, which has boosted the economy and benefited society. The Ministry of Internal Affairs and Communications (MIC) has played an important role in ICT deployment. Japan has a unique ICT policy framework that does not separate regulation and promotion, unlike many other countries, which have an independent regulator. However, since relatively little information has been provided in English, it has been difficult to learn much about Japan’s policies. Written by specialists from MIC, industry and academia, this is the first collaborative work to provide a comprehensive discussion of Japan’s ICT policies, allowing readers to gain an understanding of the topic.
"This book presents a comprehensive overview of emerging optical access network solutions to efficiently meet the anticipated growth in bandwidth demand"--Provided by publisher.
This handbook is an authoritative, comprehensive reference on optical networks, the backbone of today’s communication and information society. The book reviews the many underlying technologies that enable the global optical communications infrastructure, but also explains current research trends targeted towards continued capacity scaling and enhanced networking flexibility in support of an unabated traffic growth fueled by ever-emerging new applications. The book is divided into four parts: Optical Subsystems for Transmission and Switching, Core Networks, Datacenter and Super-Computer Networking, and Optical Access and Wireless Networks. Each chapter is written by world-renown experts that represent academia, industry, and international government and regulatory agencies. Every chapter provides a complete picture of its field, from entry-level information to a snapshot of the respective state-of-the-art technologies to emerging research trends, providing something useful for the novice who wants to get familiar with the field to the expert who wants to get a concise view of future trends.
Sensor Technologies for Civil Infrastructure, Volume 1: Sensing Hardware and Data Collection Methods for Performance Assessment, Second Edition, provides an overview of sensor hardware and its use in data collection. The first chapters provide an introduction to sensing for structural performance assessment and health monitoring, and an overview of commonly used sensors and their data acquisition systems. Further chapters address different types of sensor including piezoelectric transducers, fiber optic sensors, acoustic emission sensors, and electromagnetic sensors, and the use of these sensors for assessing and monitoring civil infrastructures. The new edition now includes chapters on machine learning methods and reliability analysis for structural health monitoring. All chapters have been revised to include the latest advances in materials (such as piezoelectric and mechanoluminescent materials), technologies (such as LIDAR), and applications. - Describes sensing hardware and data collection, covering a variety of sensors including LIDAR - Examines fiber optic systems, acoustic emission, piezoelectric sensors, electromagnetic sensors, terahertz technologies, ultrasonic methods, and radar and millimeter wave technology - Covers strain gauges, micro-electro-mechanical systems (MEMS), multifunctional materials and nanotechnology for sensing, and vision-based sensing and lasers - Includes new chapters on machine learning methods and reliability analysis
This book discusses the informatics industry in Brazil, France, India, Japan, Korea, Mexico, Taiwan, and the U.S., as models to examine the role of governments in promoting advanced technology. It considers the long-range policy analysis and evaluation necessary for fostering competitive industry.
This book presents new frontiers in data communication. To transcend the physical limitations of current optical communication technologies, totally new multiplexing schemes beyond TDM/WDM, novel transmission optical fibers handling well above Pbit/s capacity, and next-generation optical submarine cable systems will need to be developed. The book offers researchers working at the forefront, as well as advanced Ph.D. students in the area of optical fiber communications systems and related fields, an essential guide to state-of-the-art optical transmission technologies. It explores promising new technologies for the exabit era; namely, the three “M technologies”: multi-level modulation, multi-core fiber, and multi-mode control.
The growth of Internet traf?c in recent years surpassed the prediction of one decade ago. Data stream in individual countries already reached terabit/s level. To cope with the petabit class demands of traf?c in coming years the communication engineers are required to go beyond the incremental improvement of today’s technology. A most promising breakthrough would be the introduction of modulation f- mats enabling higher spectral ef?ciency than that of binary on–off keying scheme, virtually the global standard of ?ber-optic communication systems. In wireless communication systems, techniques of high spectral density modulation have been well developed, but the required techniques in optical frequency domain are much more complicated because of the heavier ?uctuation levels. Therefore the past trials of coherent optical modulation/detection schemes were not successful. However, the addition of high-speed digital signal processing technology is the fundam- tal difference between now and two decades ago, when trials of optical coherent communication systems were investigated very seriously. This approach of digital coherent technology has attracted keen interest among communication specialists, as indicated by the rapid increase in the pioneering presentations at the post-deadline sessions of major international conferences. For example, 32 terabit/s transmission in a ?ber experiment based on this technology was reported in post-deadline session of Optical Fiber Communication Conference (OFC) 2009. The advancement of the digital coherent technologies will inevitably affect the network architecture in terms of the network resource management for the new generation photonic networks, rather than will simply provide with huge transmission capacity.
Japan is well-known as the country where the penetration ratio of the intelligent cellular phone system is large. In 2007, it was reported that in the cellular phone system in Japan, the total volume of data traffic became larger than that of voice traffic. This volume looks into the challenges and opportunities.