Fenerli07
Newbie level 3
Hi all,
I just started some weeks ago working with CST and have a question concerning F-Parameters.
I want to calculate losses which occur if you want to couple light from a laser into a waveguide. For this i used a gaussian excitation (Home->Solver->Sources->Gaussian Excitation) as source and placed a waveguide above it. Afterwards I placed a port at the output of the waveguide in order to obtain the F-Parameter for that. After the simulation the corresponding F-Parameter which is defined as FourierTransform(Output_Signal)/FourierTransform(reference_Signal) gives me a value of -20 dB which is far too low. The losses shouldn't be higher than 2 dB.
So I did another simulation with only a gaussian excitation and a port placed just above it. I still obtain losses of about 12 dB (Loss = F-Parameter), even though there should be no losses in that case.
Does anyone know what could be the reason for that?
Thanks in Advance!
I just started some weeks ago working with CST and have a question concerning F-Parameters.
I want to calculate losses which occur if you want to couple light from a laser into a waveguide. For this i used a gaussian excitation (Home->Solver->Sources->Gaussian Excitation) as source and placed a waveguide above it. Afterwards I placed a port at the output of the waveguide in order to obtain the F-Parameter for that. After the simulation the corresponding F-Parameter which is defined as FourierTransform(Output_Signal)/FourierTransform(reference_Signal) gives me a value of -20 dB which is far too low. The losses shouldn't be higher than 2 dB.
So I did another simulation with only a gaussian excitation and a port placed just above it. I still obtain losses of about 12 dB (Loss = F-Parameter), even though there should be no losses in that case.
Does anyone know what could be the reason for that?
Thanks in Advance!