Multiwavelength optical networks with limited wavelength conversion
IEEE/ACM Transactions on Networking (TON)
Communications of the ACM
Wavelength requirements for multicasting in all-optical networks
IEEE/ACM Transactions on Networking (TON)
Ring routing and wavelength translation
Proceedings of the ninth annual ACM-SIAM symposium on Discrete algorithms
Wavelength conversion in optical networks
Proceedings of the tenth annual ACM-SIAM symposium on Discrete algorithms
Efficient Fault-Tolerant Routing in Multihop Optical WDM Networks
IEEE Transactions on Parallel and Distributed Systems
Sparse and limited wavelength conversion in all-optical tree networks
Theoretical Computer Science
Developments in wavelength division multiple access networking
IEEE Communications Magazine
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In many models of all-optical routing, a set of communication paths in a network is given, and a wavelength is to be assigned to each path so that paths sharing an edge receive different wavelengths. The goal is to assign as few wavelengths as possible, in order to use the optical bandwidth efficiently. If a node of a network contains a wavelength converter, any path that passes through this node may change its wavelength. Having converters at some of the nodes can reduce the number of wavelengths required for routing. This paper presents a wavelength converter with degree 4 and gives a routing algorithm which shows that any routing with load L can be realized with L wavelengths when a node of an all-optical ring hosts such a wavelength converter. It is also proved that 4 is the minimum degree of the converter to reach the full utilization of the available wavelengths if only one node of an all-optical ring hosts a converter.