
in this paper we study online wavelength assignment in wavelengthrouted wdm networks under both unicast and multicast...then generalize this technique to wdm networks with arbitrary topologies and present an algorithm that sets up an optimal lightpath networkwide in o(nk + lk) time...

in this paper, we study online wavelength assignment in wavelengthrouted wdm networks under both unicast and multicast...then generalize this technique to wdm networks with arbitrary topologies and give an algorithm that sets up an optimal lightpath networkwide in o(nk+lk) time, where n...


...it to a different output wavelength. wavelength converters thus improve network blocking performance. however, the introduction of wavelength converters into wdm crossconnects increases the hardware...it has been shown that wavelength converters offer only modest performance improvements in many networks. we also consider networks with limited wavelength conversion, in which the set of allowable...

...this paper addresses the multicast wavelength assignment (mcwa) problem in wavelengthrouted wdm networks with full light splitting and wavelength conversion capabilities. current approaches are...new multicast switch model based on the concept of sharing of light splitters and wavelength converters. furthermore, existing multicast wavelength assignment algorithm allows only one wavelength to carry the light signal...

...unlike traditional heuristics, we provide in this paper an optimization framework for the routing and wavelength assignment (rwa) problems with the objective of minimizing the rejection penalty of the connection demands in an alloptical wavelengthdivisionmultiplexing (wdm) network. our new linkbased formulation...

...with the incorporation of the wavelength division multiplexing technology in optical networks, wavelength converters allocation has become a key strategy to minimize blocking probability. the optimal wavelength converter allocation (owca) problem has been treated partially as a singleobjective problem minimizing the number of wavelength converters subject to blocking probability constrains...
Published in 2009.

...addresses the problem of multicast wavelength assignment for sparse wavelength conversion in wavelengthrouted wdm networks. it aims to optimally allocate the available wavelength for each link of the...dynamic programming algorithm for the wavelength assignment aiming to minimize the number of wavelength converters required. simulation results show that...

...multiplexers (roadms) and related technologies, wdm networks are now growing in the number of optical nodes, wavelengths, and lambda services supported. in addition, shared path protection mechanisms  whereby lambda...set of services that must share a common protection wavelength channel and assign wavelengths to every service. one objective of these strategies is...

...attention to the near term, in which wdm networks will be in the form of rings and higher level networks will be sonet/sdh selfhealing rings. this view changes the goal of wavelength assignment (wla) vs. previous work on the subject in a number of aspects. first...