To define the materials for the 3dB coupler, perform the following procedure.

StepAction
1Click File > New.

The Initial Properties dialog box appears (see Figure 1).

BPM - Figure 1 Initial Properties dialog box

Figure 1: Initial Properties dialog box

2Create the following dielectric material:

Name: CladEffInd

Refractive index (Re): 1.49

3To save the material, click Store.
4Create a second dielectric material:

Name: CoreEffInd

Refractive index (Re): 1.5

5To save the material, click Store.
6Create the following channel:

Name: WG1

2D Profile definition material: CoreEffInd (see Figure 2)

7To save the channel, click Store.

BPM - Figure 2 Profile Designer — WG1 Channel

Figure 2: Profile Designer — WG1 Channel

8Close the Profile Designer.