[sumeet kumarParticipant]

Thanks Mr Newman

[sumeet kumarParticipant]

Thanks Mr Newman

[sumeet kumarParticipant]

Thanks Mr Newman.

[sumeet kumarParticipant]

Thanks Mr Newman.

Based upon your reply, I split the work into two parts. Firstly I want to correct the source and TFSF. Later I will work on power and reflectance.

1. Basically we add a point source using input plane. We can control the injection point, beam width and strength corresponding to various positions in layout using the options center, width and rectangular/ gaussian respectively. It worked pretty well. I tried with tilting option and the wave was propagating as it was expected.

2. Now the problem was updating of field in reverse direction. So I added TFSF. But it changed everything and the wave started propagating from left to right again. Also just for curiosity, I want to know that why do we need to update wavelength in TFSF tab? Should not it be considered from the same wavelength which we already entered in source tab?

3. I attached two files. (i) without TFSF (ii) with TFSF.

Please take a look over the files and help me in figuring out how to properly incorporate TFSF into the model.

Thanks

[sumeet kumarParticipant]

Hi folks

I was trying to calculate transmittance and reflectance of a sawtooth grating. Details of problem are height = 1 cm and distance between two consecutive teeth = 1.5 cm; Permittivity of material = 9; center frequency = 10 GHz. I set up the problem in the OptiFDTD too. But after running for sufficient time steps, I could not get sum of reflectance and transmittence equal to 1. In fact their values are of the order of 10^(-2). Also it seems like wave was not propagating in the direction in which I set it to.

Please go through the OptiFDTD file and suggest me to do possible modifications.