Date Added: Jan 2011
Constructing an n ? n non-blocking wavelength router using n ? n optical cross-connects may be impractical due to certain constraints such as the cost or space limitations. Moreover, in many cases the traffic requirements can be handled without a non-blocking router. In this paper, the authors study blocking wavelength routers constructed using x ? x; x < n optical cross connects without wavelength conversion. The authors find the set of rates that can be supported between the input and output fibers of a certain set of symmetric blocking routers.