Step Action
1 Click Run button in the Simulate 3D Using 64bit Simulator dialog box. 64bit simulation will start.

Note: non-uniform mesh does not support 32bit simulation.

2 After the simulation, open the results in OptiFDTD analyzer.
3 Select Observation Area Analysis under Tools menu of OptiFDTD analyzer. Observation area analysis dialog box appears.
4 Select Observation Area tab, then Click Power Spectrum button. Power Spectrum dialog box appears.
5 Select Normalize with InputPlane1, and select total power Pz.
6 Click Calculate, Power transmission spectrum appears (refer to Figure 3)

FDTD - Figure 3 Power transmission spectrum

Figure 3: Power transmission spectrum