Tunable and Agile Laser Transmitter Developments for Future DWDM Optical Networks: Towards Managed Wavelength Control and Switching Invited Paper

Tunable and Agile Laser Transmitter Developments for Future DWDM Optical Networks: Towards... The International Telecommunications Union (ITU) has defined the laser wavelengths to be used in the frequency plan for dense wavelength division multiplexed (DWDM) optical fiber networks. It is up to the equipment manufacturers to supply suitable transmitters which network planners must use. The options involve a rack or array of many lasers or tunable lasers. We review the latter which are complex, four-section devices and discus their operation. More importantly we consider how recent work has permitted characterization and then control of these so that a single laser can access the full ITU bandwidth. We also consider the new functionality only recently available through fast wavelength switching. This may permit improved management of the fiber's full capacity at all times despite peak-to-mean traffic fluctuations per wavelength channel. The possibilities for new functionality mean a closer interaction between device and network designers in future. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Photonic Network Communications Springer Journals

Tunable and Agile Laser Transmitter Developments for Future DWDM Optical Networks: Towards Managed Wavelength Control and Switching Invited Paper

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2000 by Kluwer Academic Publishers
Subject
Computer Science; Computer Communication Networks; Electrical Engineering; Characterization and Evaluation of Materials
ISSN
1387-974X
eISSN
1572-8188
D.O.I.
10.1023/A:1010063309664
Publisher site
See Article on Publisher Site

Abstract

The International Telecommunications Union (ITU) has defined the laser wavelengths to be used in the frequency plan for dense wavelength division multiplexed (DWDM) optical fiber networks. It is up to the equipment manufacturers to supply suitable transmitters which network planners must use. The options involve a rack or array of many lasers or tunable lasers. We review the latter which are complex, four-section devices and discus their operation. More importantly we consider how recent work has permitted characterization and then control of these so that a single laser can access the full ITU bandwidth. We also consider the new functionality only recently available through fast wavelength switching. This may permit improved management of the fiber's full capacity at all times despite peak-to-mean traffic fluctuations per wavelength channel. The possibilities for new functionality mean a closer interaction between device and network designers in future.

Journal

Photonic Network CommunicationsSpringer Journals

Published: Oct 8, 2004

References

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