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Computer and Communication Networks by Nader F. Mir

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Chapter 14. Optical Networks and WDM Systems

Optical communication systems have been developed to meet two main objectives: reaching higher data transmission bandwidths and reducing the overall cost of communication networks. Optical communication technology uses principles of light emission in a glass medium, which can carry more information over longer distances than electrical signals can carry in a copper or coaxial medium. This chapter focuses on principles of optical communications, optical multiplexing, and switching used in optical computer networks. Following are the major topics covered:

Overview of optical networks

Basic optical networking devices

Large-scale optical switches

Optical routers

Wavelength allocation in networks ...

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