Optical Fiber Telecommunications VIB: Chapter 15. ROADM-Node Architectures for Reconfigurable Photonic Networks

Optical Fiber Telecommunications VIB: Chapter 15. ROADM-Node Architectures for Reconfigurable Photonic Networks
ISBN-10
0128060875
ISBN-13
9780128060872
Series
Optical Fiber Telecommunications VIB
Category
Technology & Engineering
Pages
1148
Language
English
Published
2013-05-11
Publisher
Elsevier Inc. Chapters
Authors
Sheryl L. Woodward, Mark D. Feuer, Paparao Palacharla

Description

The deployment of Reconfigurable Optical Add/Drop Multiplexers (ROADMs) is gradually transforming a transport layer made of point-to-point optical links into a highly-interconnected, reconfigurable photonic mesh. To date, the widespread use of ROADMs has been driven by the cost savings and operational simplicity they provide to quasi-static networks (i.e. networks in which new connections are frequently set up, but rarely taken down). However, new applications exploiting the ROADMs’ ability to dynamically reconfigure a photonic mesh network are now being investigated. In this chapter we review the attributes and limitations of today’s ROADMs and other node hardware, and survey proposals for future improvements, including colorless, non-directional, and contentionless add/drop ports. Applications of reconfigurable networks are also discussed, with emphasis on the backbone network of a major communications service provider (carrier). Finally, we assess which of these new developments are most likely to bring added value in the near-term and long-term future.

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