مقایسهٔ روش‌ها

	روش انتشار پرتو	اپتیک فوریه
حوزه	اپتیک	اپتیک
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1978	1822
پدیدآور	Michael Feit and John Fleck	Joseph Fourier and Ernst Abbe
نوع	Paraxial propagation algorithm	Spectral decomposition method
منبع بنیادین	Feit, M. D., & Fleck, J. A. (1978). Light propagation in graded-index optical fibers. Applied Optics, 17(24), 3990-3998.	Goodman, J. W. (1968). Introduction to Fourier Optics. McGraw-Hill.
نام‌های دیگر	BPM, paraxial approximation method	frequency-domain optics, wave optics, diffraction theory
مرتبط	3	3
خلاصه	The Beam Propagation Method is a computational technique for simulating the propagation of optical beams through slowly varying, weakly guiding structures. Developed by Feit and Fleck in 1978, BPM exploits the paraxial approximation to reduce the full vector wave equation to a scalar or vector envelope equation, enabling efficient simulation of waveguides, integrated optics, and photonic devices.	Fourier optics is a mathematical framework that analyzes optical systems and phenomena using Fourier transforms and frequency-domain methods. Grounded in Joseph Fourier's 1822 work on heat diffusion and Ernst Abbe's microscopy theory, this approach decomposes optical fields into plane waves or spatial frequencies, revealing how optical systems manipulate and filter these components to produce images and transmit information.