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Optical code-division multiplexing (OCDM) over wavelength-division multiplexing network technology is of interest for all-optical networks because it has many channels and can create a secure network. However, OCDM networks experience a cycle-attack problem due to multi-access interference propagation; if the problem occurs, all transferred signals cannot be decoded. To avoid this problem, the OCDM...
Survivability becomes an important issue in optical networks due to the huge bandwidth offered by optical technology. Many works have studied network survivability. The majority of these works are typically destined to single-domain. In this work we address the survivability in multidomain optical networks. This paper provides a classification of the existing protection solutions proposed for multi-domain...
Significant implementation challenges exist in wireless backbone connectivity. Typical optical wireless communication topologies are evaluated. A fresh approach using 1550 nm Wavelength laser to design protocol and topology for point-to-point outdoor connectivity is carried out. Matlab simulation results support the 1550 nm laser as a good choice for outdoor connectivity for optical wireless communication...
We present a k-shortest path algorithm for overlay demand routing in optical networks. The proposed algorithm can find paths in trap topologies and show higher demand routing success rate compared to shortest path algorithm-based approaches.
This paper describes design and implementation of the optical transport network backbone of CESNET NREN. Both single-channel and DWDM technology are discussed. Uncommon technology solutions and the process of its implementation in CESNET backbone network is described. Paper is enclosed by description of the current CESNET DWDM topology and prospective development. The last part deals with analysis...
Routing in multilayer optical networks can be made efficient if label switched paths are searched in a wavelength graph that represents the state and the switching facilities of the network devices very accurately. Maintaining the wavelength graph by using the conventional link state advertisement control mechanism leads to scalability problem. Much of the link state information is, however, redundant...
This paper investigates the problem of survivable multicasting in wavelength-division-multiplexing (WDM) optical mesh networks using optical-layer mixed-sharing protection. The term ldquomixed-sharingrdquo refers to that both the schemes of ldquoself-sharingrdquo and ldquocross-sharingrdquo are implemented to protect the multicast sessions. Each link on the primary tree(s) of a multicast session engrosses...
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