Efficient routing in all-optical networks
STOC '94 Proceedings of the twenty-sixth annual ACM symposium on Theory of computing
Improved access to optical bandwidth in trees
SODA '97 Proceedings of the eighth annual ACM-SIAM symposium on Discrete algorithms
Efficient routing and scheduling algorithms for optical networks
SODA '94 Proceedings of the fifth annual ACM-SIAM symposium on Discrete algorithms
Ring routing and wavelength translation
Proceedings of the ninth annual ACM-SIAM symposium on Discrete algorithms
Efficient access to optical bandwidth
FOCS '95 Proceedings of the 36th Annual Symposium on Foundations of Computer Science
IEEE Journal on Selected Areas in Communications
Allocating servers in infostations for bounded simultaneous requests
Journal of Parallel and Distributed Computing
Routing and wavelength assignment in multifiber WDM networks with non-uniform fiber cost
Computer Networks: The International Journal of Computer and Telecommunications Networking
Algorithmic aspects of bandwidth trading
ACM Transactions on Algorithms (TALG)
Journal of Discrete Algorithms
Island hopping and path colouring with applications to WDM network design
SODA '07 Proceedings of the eighteenth annual ACM-SIAM symposium on Discrete algorithms
Complexity of wavelength assignment in optical network optimization
IEEE/ACM Transactions on Networking (TON)
Routing and wavelength assignment in multifiber WDM networks with non-uniform fiber cost
Computer Networks: The International Journal of Computer and Telecommunications Networking
Minimizing maximum fiber requirement in optical networks
Journal of Computer and System Sciences
Algorithmic aspects of bandwidth trading
ICALP'03 Proceedings of the 30th international conference on Automata, languages and programming
Minimizing total busy time in parallel scheduling with application to optical networks
Theoretical Computer Science
Optimizing regenerator cost in traffic grooming
OPODIS'10 Proceedings of the 14th international conference on Principles of distributed systems
Optimizing regenerator cost in traffic grooming
Theoretical Computer Science
Routing and wavelength assignment in generalized WDM tree networks of bounded degree
PCI'05 Proceedings of the 10th Panhellenic conference on Advances in Informatics
Approximation algorithms for wavelength assignment
FSTTCS '05 Proceedings of the 25th international conference on Foundations of Software Technology and Theoretical Computer Science
On the complexity of the regenerator cost problem in general networks with traffic grooming
OPODIS'11 Proceedings of the 15th international conference on Principles of Distributed Systems
Online optimization of busy time on parallel machines
TAMC'12 Proceedings of the 9th Annual international conference on Theory and Applications of Models of Computation
An online parallel scheduling method with application to energy-efficiency in cloud computing
The Journal of Supercomputing
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In this paper we study wavelength assignment on an optical linesystem without wavelength conversion. Consider a set of undirected demands along the line. Each demand is carried on a wavelength and any two overlapping demands on the same fiber require distinct wavelengths. Suppose μ wavelengths are available in the system and each fiber can carry all μ wavelengths. We define ℓ(e), the load on link e, to be the smallest integer such that ℓ(e)μ is at least the number of demands passing through e. Hence, ℓ(e) is the minimum number of fibers required on e in order to support all demands.We present a polynomial-time wavelength assignment algorithm that guarantees each wavelength appears at most ℓ(e) times on each link e. (This generalizes the well-known fact that interval graphs are perfect.) In the presence of MOADMs (mesh optical add/drop multiplexers), devices that multiplex distinct wavelengths from different fibers into a new fiber, we only need to deploy ℓ(e) fibers per link. On the other hand, if each demand has to stay on a single fiber, as is the case without MOADMs, we show that some links may require more than ℓ(e) fibers. In fact, we show that it is NP-complete to decide if a set of demands can be carried on a given set of fibers, or if there exists a set of fibers with a given total length that can carry all the demands.