Learning Forum

[teddie smith]

I wrote a code that allows me to view farfield results at a specific wavelength and distance (r). The wavelength range is from 380nm to 780nm, and I obtained farfield results at -90~90 degrees. However, when I set r=1 in my code, the image differs slightly from the one produced using FDTD's farfield visualizer. Specifically, my result image is slightly shifted upwards. Is there any problem in my code?

[Guilin Sun]

Sorry to reply you late as our team is busy in other projects.

The reason most like due to the fact that, inside FDTD, it records frequency so equi-distance frequency does not lead to equi-distance wavelength. However in your script you sampled the wavelength uniformly. I would suggest to get the frequency data from simulation for your script and then compare the results.