There is no good, universal, analytical technique. Errors, a simple tool in the Core Essential Macleod, assumes independent random thickness errors in all layers and can quickly show that independent control demands impossible accuracies in many coatings that can actually be constructed using other methods. In fact, tolerances and effects of errors depend strongly on the control technique. Simulator solves the tolerancing problem by extending the Monte Carlo approach of Errors into a realistic model of the control process. Using a control plan created by Runsheet, Simulator models the control of deposition, introducing both random and systematic effects such as noise on the signal, tooling factor variation, packing density errors, and so on, and shows the effect that these parameters have on the final simulated production coatings.
Simulator answers much more than simple monitoring questions.
All kinds of other parameters associated with the coating system can be translated into the parameters of the model and their effect examined. We call this polarization leakage . The DWDM Assistant automatically designs a set of multiple-cavity filters to meet your specifications. Filter designs may be sorted according to criteria such as total thickness and estimated deposition time. Designs can be opened for detailed analysis.