Protection Mechanisms for Optical WDM Networks based on Wavelength Converter

Abstract— This paper studies the problem of designing survivable optical wavelength division multiplexed (WDM) networks. A wavelength-routed wide area backbone network supporting circuit-switched traffic is considered. This paper also considers the use of optical wavelength conversion technology which has been shown to help improve network performance. However, wavelength conversion is still an expensive technology and using optical conversion could potentially result in signal quality degradation. In survivable networks, protection against failures is provided using backup paths that are determined when a session is established. In this paper, we present three primary and backup route computation mechanisms that attempt to improve overall network performance compared to existing solutions. One of the key design goals is to reduce the number of required converters per node. First, we present a routing algorithm, termed conversion free primary routing (CFPR) that computes primary pat...

• Type: Conference
• Year: 2003
• Where: INFOCOM
• Authors: Sunil Gowda, Krishna M. Sivalingam
• Keywords: Backup Paths, Communications, INFOCOM 2003, Wavelength, Wavelength Conversion