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Analytical Model for Multi-Fiber WDM Networks with Sparse and Limited Wavelength Conversion  

Jeong, Han-You (부산대학교 차세대물류IT기술연구사업단)
Seo, Seung-Woo (서울대학교 전기공학부)
Choi, Yoon-Ho (펜실베니아주립대학)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.4B, 2009 , pp. 394-402 More about this Journal
Abstract
In this paper, we present a new analytical model for estimating the blocking performance of multi-fiber WDM networt:s with sparse and limited wavelength conversion (SLWC). The proposed model is a reduced-load approximation model that can obtain accurate estimates of blocking probability of such networks. Our model employs three new recurrence formulae to obtain the free wavelength distribution on a multi-fiber link, the free wavelength distribution after limited-range wavelength conversion and the end-to-end blocking probability of a multi-hop path, respectively. From the numerical results on the NSFNET, we demonstrate that the blocking performance of two-fiber NSFNET with three wavelength-convertible nodes, each of which translates an input wavelength to its adjacent output wavelengths, closely approximates the blocking performance of full wavelength conversion.
Keywords
blocking performance; wavelength routing; multi-fiber WDM networks; sparse and limited wavelength conversion;
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