Abstract

In this work we quantify the improvement in blocking performance from the use of wavelength interchange in WDM Rings and their interconnection. We introduce a metric called the fairness ratio which measures the variation in blocking of the longest path connections compared to the shortest path connections. We show that the use of A- interchange in WDM rings can significantly improve (by factors of 100 to 10000) the fairness in wavelength assignment. More importantly, we found that for larger interconnected WDM rings this improvement can be achieved by including A-interchange capability in just 10% – 20% of the nodes in the network. We present two analytical models, a more complex overflow model and a simpler asymptotic model, for calculating the blocking performance of WDM rings that have no wavelength interchange capability but use the “maximum reuse” algorithm for wavelength assignment. We show that the overflow model is accurate when compared to simulations and that the simple asymptotic model gives surprisingly reasonable results.

© 1998 Optical Society of America

PDF Article
More Like This
Benefits of “minimal” wavelength interchange in WDM rings

Krishna Bala, Eric Bouillet, and Georgios Ellinas
WD2 Optical Fiber Communication Conference (OFC) 1997

Benefits of limited wavelength conversion in WDM ring networks

Ori Gerstel, Rajiv Ramaswami, and Galen Sasaki
WD1 Optical Fiber Communication Conference (OFC) 1997

Practical benefits of 4-fibre WDM rings with realistic traffic

Dominique Marcenac and Christian Félicité
TuF5 Optical Fiber Communication Conference (OFC) 1999

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription