Uniform versus non-uniform band switching in WDM networks q

We compare the effectiveness of uniform versus non-uniform waveband switching under the dualcost metrics of switching requirements and fiber capacity. We consider a star topology and begin by characterizing the optimal performance frontier achievable under no restrictions on waveband sizing, and provide algorithms employing non-uniform waveband sizing that approach or achieve this optimum. We then consider the specialcase of uniform waveband sizing, and show that the performance compares very favorably. We also extend our results to general topologies