Marija Furdek

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Elastic optical networking is considered a promising candidate to improve the spectral efficiency of optical networks. One of the most important planning challenges of elastic optical networks is the NP-hard routing and spectrum assignment RSA problem. In this paper, we investigate offline RSA in elastic filterless optical networks, which use a passive(More)
The high data rates employed by wavelength division multiplexing transparent optical networks make them most suitable for today's growing network traffic demands. However, their transparency imposes several vulnerabilities in network security, enabling malicious signals to propagate from the source to other parts of the network without losing their(More)
Transparent optical networks (TONs) are vulnerable to high-power jamming attacks aimed at service disruption by exploiting the inherent characteristics of optical fibers, amplifiers and switches. In this type of attack, a high-power jamming signal is injected in the network to degrade the quality of legitimate user signals. Conventional survivability(More)
0377-2217/$ see front matter 2012 Elsevier B.V. A ⇑ Corresponding author. Tel.: +385 16129731. E-mail addresses: (N. Sk (M. Furdek), (R. Apa (P. Pavõn Mariño). Today’s Transparent Optical Networks (TONs) are highly vulnerable to various physical-layer(More)
Active photonic switching components, such as reconfigurable optical add/drop multiplexers (ROADMs), cannot be deployed at the branching units (BUs) in submarine networks, which limits the flexibility of the undersea networks. In this regard, the filterless optical network architecture based on passive broadcast-and-select nodes and coherent transceivers at(More)
Physical layer attacks in transparent optical networks are a serious security threat to network operation. We propose a novel protection approach based on wavelength assignment which limits the maximal propagation of intra-channel crosstalk attacks. ©2007 Optical Society of America OCIS codes: (060.4251) Networks, assignment and routing algorithms,(More)