Routing and wavelength assignment with power considerations in optical networks

Maher Ali, Byrav Ramamurthy, Jitender S. Deogun

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Abstract

Previous studies have solved may variations of the routing and wavelength assignment (RWA) problem in optical networks under the assumption of perfect conditions regarding the power of a signal. In this paper, we investigate the RWA problem while allowing for degradation of routed signals by optical components. The problem is formulated as a mixed-integer non-linear program. We propose a two-phase approach. In the first phase, we solve the pure RWA problem using fixed routes for every connection. In the second phase, power assignment is accomplished by either using a heuristic or using a genetic algorithm. This paper demonstrates that: (i) connections do interact affecting the power of each other, and (ii) global search meta-heuristics provide better solutions.

Original languageEnglish (US)
Pages (from-to)539-555
Number of pages17
JournalComputer Networks
Volume32
Issue number5
DOIs
Publication statusPublished - May 15 2000

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ASJC Scopus subject areas

  • Computer Networks and Communications

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