Write a simulation program that calculates Fresnel and Rayleigh-Sommerfeld diffraction fields between
two parallel planes. There will be a main body and two functions in the simulation program. Each
function will perform one of the diffraction field calculation. Those functions should take sampling
period, size of the diffraction field, optical wavelength and the distance between planes as inputs from
the main body. As a test diffraction field, you can prepare a white circular region with 15 pixel radius in
a 256 * 256 black image. You can use following parameters to test your simulation programs: Sampling
period: Lemad/2; wavelength: 500nm; the distance between the planes: 128 Lemda.
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