Paper Info
Title
Effects of wavelength routing and selection algorithms on wavelength conversion gain in WDM optical networks
Abstract
Wavelength division multiplexing technology is emerging as the transmission and switch- ing mechanism for future optical mesh networks. In these networks, it is desired that a wavelength can be routed without electrical conversions. Two technologies are possible for this purpose: Wavelength Selective Cross-Connects (WSXC), and Wavelength Interchanging Cross-Connects (WIXC) which involve wavelength conversion. It is believed that wavelength converters may improve the blocking performance, but there is a mix of results in the literature on the amount of this performance enhancement. In this paper, we use two metrics to quantify the wavelength conversion gain: the reduction in blocking probability and the increase in max- imum utilization, compared to a network without converters. We study effects of wavelength routing and selection algorithms on these measures for mesh networks. We use the Overflow Model to analyze the blocking probability for wavelength selective mesh networks using the First-Fit wavelength assignment algorithm. We propose a dynamic routing and wavelength selection algorithm, the Least Loaded Routing (LLR) algorithm, which jointly selects the least loaded route-wavelength pair. In networks both with and without wavelength converters, the LLR algorithm achieves much better blocking performance compared to the Fixed Shortest Path Routing algorithm. LLR produces larger wavelength conversion gains; however, these large gains are not realized in sufficiently wide utilization regions, and are diminished with the increased number of fibers.
Year
DOI
Venue
1998
10.1109/90.664267
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Keywords
DocType
Volume
Wavelength routing,Optical wavelength conversion,Mesh networks,Wavelength division multiplexing,Optical fiber networks,Wavelength conversion,Wavelength converters,Wavelength measurement,Algorithm design and analysis,Wavelength assignment
Journal
6
Issue
ISSN
ISBN
2
1063-6692
0-7803-3336-5
Citations 
PageRank 
References 
142
15.39
13
Authors
2
Search Limit
100142
Name
Order
Citations
PageRank
Ezhan Karasan128641.74
Ender Ayanoglu2894136.79