4f Fresnel Filter Design with Wave Diffraction Simulation

The 4f Fresnel filter design and optical wave diffraction simulation program represents a significant project that required substantial time and effort to complete. In this project, I began by conducting thorough research on the design principles and operational mechanisms of Fresnel filters. The implementation involved creating a simulation framework that models wave diffraction phenomena using Fourier optics principles. Key algorithmic components included implementing angular spectrum propagation methods and Fourier transform-based diffraction calculations. The simulation program was designed with parameterizable filter characteristics, allowing for dynamic adjustment of Fresnel filter parameters such as focal length, aperture size, and phase modulation properties. Through systematic parameter variation, I simulated and analyzed different wave diffraction effects, employing quantitative evaluation metrics to assess diffraction patterns and energy distribution. The code architecture featured modular design with separate components for wave propagation calculation, filter parameter configuration, and result visualization. The project successfully demonstrated various diffraction effects through controlled experiments, with the simulation including features for real-time parameter adjustment and comparative analysis of diffraction outcomes. This implementation provided valuable hands-on experience in Fresnel filter design principles and advanced wave optics simulation techniques, particularly in handling complex diffraction phenomena within the 4f optical system configuration.