19 August 2003 Optical networks at cross roads
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Proceedings Volume 5247, Optical Transmission Systems and Equipment for WDM Networking II; (2003); doi: 10.1117/12.512947
Event: ITCom 2003, 2003, Orlando, Florida, United States
The paper addresses the migration path and trade-offs involved in the evolution towards intelligent optical networks that allow scalable and flexible transport of a range of client formats and services. Disruptive all-optical switching and ultra-long reach WDM transmission technologies enable all-optical networks without opto-electronic conversion along paths that can span thousands of kilometers. Optical transport networks coupled with advances in distributed routing and signaling mechanisms are enabling the deployment of Automatically Switched Optical Networks (ASON). The paper discusses in detail the network architecture, optical switching capability, and network management and control architecture involved in the migration from existing and widely deployed WDM optical point-to-point systems to ASONs. The paper reports the findings of the Global Seamless Network (GSN) demonstrator at Deutsche Telekom, in which the concepts of intelligent optical transport networks are being demonstrated and evaluated. Further, a special emphasis is devoted to the question of managing survivability in ASONs. Simulation results comparing different approaches are presented, which illustrate the trade-off between dimensioning and performance of resilience mechanisms. The multi-layer integration between optical and higher layers is addressed from both a control plane and survivability perspective. Scenarios with different clients of the optical layer such as SDH and IP/MPLS are analyzed.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Monika Jaeger, Ralf Huelsermann, "Optical networks at cross roads", Proc. SPIE 5247, Optical Transmission Systems and Equipment for WDM Networking II, (19 August 2003); doi: 10.1117/12.512947; https://doi.org/10.1117/12.512947

Optical networks

Network architectures



Wavelength division multiplexing


Control systems


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