Fourier Transform, Optical Computing, Free Space Optics.
reconstruct either a larger 2D FT with shape (nx²,ny²)​ or a batch of ​nx² 1D transforms with size ​ny², using 2D FTs with shape (nx,ny)​ as the main building-blocks. As a side note, notice that the values of nx and ny used in the first and second FTs do not really need to be equal. Under some