Treats every point in the starting field as a point source; the final field is the sum of contributions from all these sources. 2. Common Numerical Methods
There are two primary conceptual frameworks for simulating wave propagation: Numerical Simulation of Optical Wave Propagatio...
Decomposes an initial optical field into plane waves, propagates each separately by applying a complex phase shift, and recombines them using an inverse Fourier transform . Treats every point in the starting field as