Thank you for your reply.
I am stating the details of the design. please correct me if i am wrong.
As i am new to OPTIFDTD,i have a little bit knowledge in designing and getting the spectra. I have proceeded to measure the spectra with the *.FDA file provided in the FDTD method (https://optiwave.com/forums/topic/silicon-nanowire-fdtd/) and succeded in getting the accurate results for the silicon nanowire with incident light parallel to the nanowire length.
Then i proceeded for the nanowire with incident light normal to the nanowire length where i faced some issues. I came up with two ideas in designing the system.
1: I placed the silicon nanowire parallel to x-axis and the vertical input plane is placed in the positive direction. The detectors (observation areas for transmission spectrum and reflection spectrum ).( I have attached the deisgner file(*FDA) in the previous question)
2: I placed the silicon nanowire along the z-axis with vertical input plane in the positive direction with tilt angle 90 degree.
Are they correct designs for my study?
Also, One more question i want to ask ” How do i know the time delay and FWHM for a particular source wavelength ?”