In this article, we introduce a SPAD simulation workflow that involves 3D broadband optical and 2D electrical simulations for the calculation of the SPAD Photon Detection Efficiency (PDE). We demonstrate how to calculate the optical generation rate using FDTD solver and sweeping over different polarizations and incident angles of the input source. By combining these results with CHARGE simulations, we calculate the PDE vs wavelength for different incident angles and bias voltages.
Read the full article here: https://optics.ansys.com/hc/en-us/articles/37884892272275