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An algorithm for virtual topology design in WDM optical networks under physical constraints

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2 Author(s)
Ji Yon Youe ; Sch. of Electr. Eng., Seoul Nat. Univ., South Korea ; Seung-Woo Seo

Although designing a virtual topology for all-optical WDM wide-area networks has been extensively studied and several algorithms have been proposed, these algorithms assume error-free communication between two nodes. However, noises from optical amplifiers and optical cross-connects can degrade the signal, resulting in a nonzero bit-error rate. In this paper, we investigate the effect of physical limitations on the virtual topology design. We show that for wide-area all-optical networks where transmission distance is fairly long, virtual topology design algorithms must take physical limitations into account to ensure a low bit-error rate. We also propose a heuristic algorithm that can determine the locations of opto-electronic (OE) and electro-optic (EO) conversions to set up a connection request with a high BER in a multihop manner

Published in:

Communications, 1999. ICC '99. 1999 IEEE International Conference on  (Volume:3 )

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