This page discusses issues related to running broadband CMOS image sensor simulations. Typical users will follow these steps as they move from single wavelength simulations to broadband simulations:
1.Initially, run simulations at 3 different wavelengths to collect data for red, green and blue illumination.
2.Increase the bandwidth of the 3 simulations to collect light over a range of wavelengths associated with red, green and blue.
3.Eventually, it may be possible to simulate the entire spectrum in a single simulation.
The example simulations described in the previous pages used the initial approach and collected data at only one wavelength. Collecting results at more than a few wavelengths in this manner would be slow, since the entire set of simulations must be re-run at each frequency of interest. A better approach is to collect broadband (multiple frequencies) results from a single simulation, and this capability is a key advantage of using a time domain simulation method like FDTD. However, there are some complications related to broadband simulations that must be considered and this section explains how to address them.