What source bandwidth should I use for my simulation?#
Date |
Category |
---|---|
2023-12-04 18:52:21 |
Sources |
Tidy3Dβs broadband source feature is designed to produce the most accurate results in the frequency range of (freq0 - 1.5 * fwidth, freq0 + 1.5 * fwidth)
. Therefore, it is necessary to define the source center frequency freq0
and bandwidth fwidth
to properly cover the desired application frequency range. For example, if the user wants to adjust the source bandwidth to cover a wavelength range between wl_min
and wl_max
, the source bandwidth can be defined as: fwidth = alpha * (C_0/wl_max - C_0/wl_min)
, where alpha
is a constant typically chosen between 1/3 and 1/2 to ensure accurate results.