Learning Forum

[Guan Hong Li]

I am currently using MODE Solutions to solve the electric field inside a waveguide, and I need to extract the far-field mode. In my script, I wrote:

farfield=getresult("FDE::data::mode1","farfield");

However, this script prompts the frequency selection window to appear. How can I modify my script to automatically press 'OK' in the frequency selection window?

I have already included:
farfieldsettings("far field filter", 0.2); farfieldsettings("override near field mesh", 1); setanalysis("wavelength", 1.03*um);
Any suggestions?

[Amrita Pati]

Hi Guan,

Instead of using getresult, you can use the standard farfield commands similar to what we do in FDTD. Here is a sample code:

mode_number=1; #The mode number
mon_name="FDE::data::mode"+num2str(mode_number);
res = 151;#resolution of farfield data

E2=farfield3d(mon_name,1,res,res);
ux=farfieldux(mon_name,1,res,res);
uy=farfieldux(mon_name,1,res,res);
image(ux,uy,E2,"","","|E|^2 at 1 m","polar");

 

Let me know in case you have questions. 

 

 

Regards,
Amrita

[Guan Hong Li]

 

Hi,Amrita

Thanks for your help, but I still have a question.

Is it feasible to change the far-field projection coordinates to a screen at a fixed distance from the waveguide and convert them to Cartesian coordinates?

By the way, the solver what I using is the FDE solver in MODE solusion.

Regards,
Guan Hong

 

 

[xin zhang]

Hi！

Do you know how to select the “farfieldfilter” parameters correctly? If the monitor edge electric field is large, do I also need to filter it to 0.