Design protection for WDM optical networks

With wavelength division multiplexing (WDM) networks the failure of a single link or component may cause the simultaneous failure of several optical channels, potentially making impossible restoration by rerouting directly in higher layers directly using the optical network (SDH, ATM, internal proto...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 1998-09, Vol.16 (7), p.1158-1165
Main Authors: Crochat, O., Le Boudec, J.-Y.
Format: Article
Language:English
Subjects:
Asynchronous transfer mode
Optical design
Optical devices
Optical fiber networks
Optical propagation
Protection
Protocols
Synchronous digital hierarchy
Wavelength division multiplexing
WDM networks
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Summary:With wavelength division multiplexing (WDM) networks the failure of a single link or component may cause the simultaneous failure of several optical channels, potentially making impossible restoration by rerouting directly in higher layers directly using the optical network (SDH, ATM, internal protocol (IP)). To address this, we introduce the concept of design protection, which aims at making such failure propagations impossible. We present the disjoint alternate path (DAP) algorithm which places optical channels in order to maximize design protection. We show the result on various network examples.
ISSN:0733-8716
1558-0008
DOI:10.1109/49.725186