Book details of 'Multiwavelength Optical Networks: A Layered Approach'

Title	Multiwavelength Optical Networks: A Layered Approach
Author(s)	Thomas E. Stern, Krishna Bala
ISBN	020130967X
Language	English
Publisher	Prentice Hall PTR

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Reviewer Rob Slade wrote:
The book is intended both as a course text, and professional (engineering) reference, for wavelength-division multiplexed (WDM) optical networks: those networks that use different "colours" of light in a single physical path, either to create separate communications channels or increase bandwidth. Chapter one introduces the general situation for optical networks: the need for higher bandwidth and the limitations that leave existing optical paths mostly unused. Some attempt is made to explain basic technologies. This material is accessible to the intelligent non- specialist, but it lacks depth for those not fully familiar with photonic technologies. For example, the point is made that optical systems are fast but dumb, and electronic systems are intelligent but slow, but there is no specific comparison of the current and theoretical switching speeds for equivalent optical and electronic discrete components. Designs for switches and other node elements are presented in chapter two, although the material could be improved with the addition of some discussion of the physical components themselves. Study problems are included, and, although not simple, they may be simplistic in terms of testing for full comprehension. The topological, connection, and physical layer protocol discussions in chapter three make it a bit of a mixed bag. It is in chapter four that we get some of the background needed to understand the content in the previous section, with explanations of optical fibre, lasers, detectors, switches, and so forth. Functions and characteristics of static multipoint networks are outlined in chapter five, with wavelength routed networks in chapter six, and logically routed networks in chapter seven. Chapter eight looks at survivability and restoration topologies. Current trends in multiwavelength technologies are reviewed in chapter nine. The appendices discuss theory, algorithms, and the SONET standard. While the organization of the material is not always straightforward, the content is useful to the student or worker in the multiwavelength field. copyright Robert M. Slade, 1999
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Book description:

Written by leading authorities in optical networking, this book explores wide area wavelength-division multiplexing now that commercial deployment is at hand. After an overview of the enabling technology, the authors focus on methodologies for network analysis, control, design, and protection from a layered multiwavelength network architecture point of view. The book presents four architecture categories, in increasing order of complexity: -- Shared channel networks, which use optical multiplexing and multiple access to provide multipoint connectivity on a static optical layer -- Wavelength-routed networks, which use optical switching to provide point-to-point connectivity over a reconfigurable optical layer Linear lightwave networks, which support multipoint connectivity over a reconfigurable optical layer Hybrid, logically routed networks, using electronically switched overlays to provide virtual connectivity on a reconfigurable optical layer Procedures for network control and design are covered for each category of network and are illustrated with examples. The emphasis here is on the fundamental role of available network resources--optical spectrum, fiber topology, and switching node and access station functionality--in determining network performance. Important topics covered are: -- Multiplexing and multiple access in the optical domain -- Effective techniques for physical layer simulation -- Optical switch designs to circumvent component imperfections, plus coverage of optical layer packet switching -- New and efficient algorithms for routing and wavelength assignment -- Combining the advantages of optical transparency and electronic switching -- Network survivability and fault recovery -- Recent commercial trends in multiwavelength optical networking and practical deployment issues that may arise, including cost, flexibility, and performance tradeoffs