To insert the TF/SF plane wave excitation follow the steps below:

StepAction
1From the Draw menu, select TFSF region.
2 Click in the layout window at the position where you want to insert the TFSF region.

A Green/red rectangular region that represents the TFSF appears in the layout window. (Figure 9)

FDTD - Figure 9 Initial TFSF in the layout

Figure 9: Initial TFSF in the layout

3To set up the TFSF Input wave properties, double-click the TFSF lines in the layout window. The TFSF Properties dialog box appears. Set the time domain Input Plane basic information.

•     Select Continuous Wave

•     Wavelength (um): 1.5

Note:

•     Continuous Wave

The specified wavelength is a single wavelength that is used in simulations.

•     Gaussian Modulated Continuous Wave

The specified wavelength is the carrier wavelength (center wavelength) for the pulse simulations.

4In the General Tab, input the following information: (Figure 10)

•     Input Wave Angle:  0.0 [deg]

•     X min:  -0.45µm

•     X max: +0.45µm

•     Z min:  0.55µm

•     Z max: 1.45µm

FDTD - Figure 10 General Information for TF/SD input wave

Figure 10: General Information for TF/SD input wave

a.   In the 2D Transverse Tab, input the following information:

•     Effective Refractive index :  Background (wafer)

•     Input Amplitude or Power

Amplitude: 1.0

5To set up the scattering field detector properties, in the 2D SF Detectors Tab, input following information:

a.   In the Detector Distance tab, input following information (Figure 11)

•     Distance X min side: 0.15µm,Enabled

•     Distance X max side: 0.15µm, Enabled

•     Distance Z min side: 0.15µm,Enabled

•     Distance Z max side: 0.15µm, Enabled

 

 

Note:

•     Scattering field detectors are four observation lines beside the TFSF input lines, the position is determined by the distance to the input plane.

•     In this case the Scattering field detector is out of the wave, this detector will be disabled.

In this case the S will be disabled.

FDTD - Figure 11 2D SF Detector Distance

Figure 11: 2D SF Detector Distance

b.   In the 2D Data Components tab, input the following information (default) (Figure 12)

•     For x-direction detector, Select x-direction Poynting vector Sx.

•     For z-direction detector, Select z-direction Poynting vector Sz

FDTD - Figure 12 2D data Components for Scattering field detector

Figure 12: 2D data Components for Scattering field detector

6Click OK in TFSF Properties dialog box. A modified TFSF region appears in the layout window. (Figure 13)
7Click Save in the file menu to save this project to a file.

FDTD - Figure 13 TF/SF input plane in the layout window

Figure 13: TF/SF input plane in the layout window

Note: 2D TF/SF cannot work with other input wave type such as point source, input plane.