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Two Conditions under which WDM Networks are Rearrangeably Nonblocking without Wavelength Interchangers

By Richard A. Thompson


Any network’s blocking characteristic depends on its path diversity. WDM networks have path diversity in the space division if the network’s topology is rich in alternate routes and in the wavelength division if the network’s links have many wavelengths or can interchange wavelengths at some nodes. This paper shows that this costly wavelength interchange is not needed if the network’s spatial topology is suffi-ciently rich, and shows that this spatial richness is defined by the classic Clos inequalities

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Provided by: D-Scholarship@Pitt

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