Learning Forum

[KENNY.HH.CHEN]

Hi all,

I am studying optical phased array applications, and I want to use the far-field results calculated by FDTD as the source in Zemax.

The FDTD simulation schematic and far-field results (monitor located 30 nm above the antenna) are shown below.

I referred to the zbfwrite - Script command – Ansys Optics script command in the Ansys Optics documentation and tried to modify the script as shown below:

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clear;

f = getdata("above", "f");

lambda = c / f;

x_monitor = getdata("above", "x");

y_monitor = getdata("above", "y");

z_monitor = getdata("above", "z");

x = pinch(x_monitor);

y = pinch(y_monitor);

Ex = getdata("above", "Ex");

Ey = getdata("above", "Ey");

Ez = getdata("above", "Ez");

Ex = pinch(Ex, 3, 1);

Ey = pinch(Ey, 3, 1);

Ez = pinch(Ez, 3, 1);

M = rectilineardataset("E", x, y, z_monitor);

M.addparameter("lambda", lambda);

M.addattribute("E", Ex, Ey, Ez);

visualize(M);

zbfwrite("testfile.zbf", M);

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Currently, I can only export the near-field results, but I don't know how to modify the script to export the far-field results to a ZBF file.

By the way, I also referred to both topics, Patterned OLED – Ansys Optics and Patterned OLED – Ansys Optics, which save FDTD results into a format that can be imported into OpticStudio. However, the export files did not involve ZBF profiles, so I'm confused about this.

Thanks.

[Niki Papachristou]

Hi Kenny,

Thank you for reaching out to us! May I refer you to this article:  ZBF Import\Export?

I think you case falls into what is stated here: 

Hence I think you need to use farfieldexact - Script command before zbfwrite - Script command.

I think this Application Gallery example is using this concept: Integrated microlens and grating coupler for photonic integrated circuits

I hope this was helpful but let me know if you have any further questions.

Kind Regards,

Niki