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Cisco Self-Study: Building Cisco Metro Optical Networks (METRO) by Dennis Hartmann, Dave Warren

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Chapter 8. Implementing DWDM in Metropolitan-Area Networks

This chapter covers the following topics:

  • Challenges in the metro-area network

  • Multiplexing optical signals

  • Dense wavelength division multiplexing fundamentals

  • DWDM components

  • Optical impairments in DWDM systems

  • Cisco DWDM equipment

  • Building a DWDM infrastructure

Today's explosion in data traffic, fueled in large part by the growth of the Internet, has caused rapid depletion of available fiber bandwidth in the metropolitan area. As a result, service providers have reacted by increasing capacity in their long-haul and core networks. The bandwidth bottleneck is now that of the metropolitan-area networks (MANs), where capacity has not increased as greatly as the long-haul networks. Keeping pace with ...

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