Versatility of a colorless and directionless WSS based ROADM architecture

Authors:
G. Prasanna;B. Sai Kishore;G. K. Omprasad;K. Sathyanarayana Raju;R. Gowrishankar;K. Venkataramaniah;Ron Johnson;Pavan Voruganti
Affiliations:
Department of Physics, Sri Sathya Sai University, India;Department of Physics, Sri Sathya Sai University, India;Department of Physics, Sri Sathya Sai University, India;Department of Physics, Sri Sathya Sai University, India;Department of Physics, Sri Sathya Sai University, India;Department of Physics, Sri Sathya Sai University, India;Cisco Systems Inc., San Jose, California;OpVista Inc., Milpitas, California
Venue:
COMSNETS'09 Proceedings of the First international conference on COMmunication Systems And NETworks
Year:
2009

Citing 3
Cited 3

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CAPEX minimization through node degree reduction in a colorless and directionless ROADM architecture for flexible optical networks

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Colorless, directionless and contentionless multi-degree ROADM architecture for mesh optical networks

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CAPEX minimization through node degree reduction in a Colorless and Directionless ROADM architecture for flexible optical networks

Optical Switching and Networking

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Abstract

In core/metro optical networks there are multidegree nodes providing N path interconnections and alternate paths for protection. This paper presents the optimum implementation of a colorless and directionless add/drop switching feature in a mesh network, using the WSS based ROADM. The idea of scaling, viewed as an increase in route degree and number of wavelengths handled in each direction is then addressed. Subsequently, we suggest the best ways in which specific advantages like dynamically optimizing light paths by optical bridge-and-roll, avoiding O-E-O operations and blocking specific wavelengths can be leveraged. Finally, practical implementation issues like power loss, OSNR and cost considerations are discussed.