مقایسهٔ روش‌ها

	روش تفاضل محدود در حوزه زمان	روش انتشار پرتو
حوزه	اپتیک	اپتیک
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1966	1978
پدیدآور	Kane Yee	Michael Feit and John Fleck
نوع	Finite-difference algorithm	Paraxial propagation algorithm
منبع بنیادین	Yee, K. S. (1966). Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media. IEEE Transactions on Antennas and Propagation, 14(3), 302-307.	Feit, M. D., & Fleck, J. A. (1978). Light propagation in graded-index optical fibers. Applied Optics, 17(24), 3990-3998.
نام‌های دیگر	FDTD, Yee scheme	BPM, paraxial approximation method
مرتبط	3	3
خلاصه	The Finite-Difference Time-Domain method is a computational technique for solving Maxwell's equations by discretizing space and time on a grid. Introduced by Kane Yee in 1966, FDTD is a foundational approach in computational electrodynamics and optical simulation, enabling direct modeling of electromagnetic wave propagation through complex media.	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.