Using the same layout created in 2D-TE plane wave in unique material, create another file with the same layout by selecting File > Save As and using a different file name.

Step Action
1 From the Edit menu, select Wafer Properties.

The Wafer Properties dialog box appears.

2 Click the 3D Wafer Properties tab and set the Cladding: Material and Substrate Material to N=2.
3 Click OK.

The Wafer Properties dialog box closes.

4 To edit the input plane, double-click on the input plane in the layout.

The Input Plane Properties dialog box appears.

5 On the General tab, type/select the following:

Continuous Wave

Wavelength [μm]: 2.0

Input Field Transverse: Rectangular

Plane Geometry:

Z Position [μm]: 1.0

6 On the 3D Transverse tab, type/select the following:

Center Position [μm] X: 0.0

Halfwidth [μm] X: 5.0

Center Position [μm] Y: 0.0

Halfwidth [μm] Y: 5.0

Tilting Angle [deg]: 0

Effective Refractive Index: Local

Polarization: LinearY

Select the Amplitude radio button and type: Amplitude [V/m2]: 1.0

7 Click OK.

The Input Field Properties dialog box closes.

Setting the 3D-Y-direction polarized plane wave simulation parameters

Step Action
1 From the Simulation menu, select 3D Simulation Parameters.

The 3D Simulation Parameters dialog box appears.

2 Type/select the following information:

Mesh Delta X [μm]: 0.1

Mesh Delta Y [μm]: 0.1

Mesh Delta Z [μm]: 0.1

3 Click Advanced….

The Boundary Conditions dialog box appears.





-Z: Anisotropic PML

+Z: Anisotropic PML

Anisotropic PML Calculation Parameters

Number of Anisotropic PML Layers: 10

Theoretical Reflection Coefficient: 1.0e-12

Real Anisotropic PML Tensor Parameters: 1.0

Power of Grading Polynomial: 3.5

4 Click OK.

The Boundary Conditions dialog box closes.

5 In Time Parameters, click Calculate.

The default time step size is calculated.

6 Select Run for 1000 Time Steps (Results Finalized).
7 Select Key Input Information: Input Plane1 and wavelength:2.00.
8 Select DFT Options: Electric Components: Ey.
9 Click Run to start the OptiFDTD Simulator.

When the simulation is running, the plane wave effect can be observed in the
simulator (see Figure 26).

FDTD - Figure 26 3D Y-direction polarized plane wave

Figure 26: 3D Y-direction polarized plane wave