השוואת שיטות

	ניתוח גלים מצומדים קפדני	שיטת התפשטות האלומה
תחום	אופטיקה	אופטיקה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1981	1978
הוגה השיטה	M. G. Moharam and T. K. Gaylord	Michael Feit and John Fleck
סוג	Diffraction algorithm	Paraxial propagation algorithm
מקור מכונן	Moharam, M. G., & Gaylord, T. K. (1981). Rigorous coupled-wave analysis of planar-grating diffraction. Journal of the Optical Society of America, 71(7), 811-818.	Feit, M. D., & Fleck, J. A. (1978). Light propagation in graded-index optical fibers. Applied Optics, 17(24), 3990-3998.
כינויים	RCWA method, coupled-wave method, diffraction grating analysis	BPM, paraxial approximation method
קשורות	3	3
תקציר	Rigorous Coupled-Wave Analysis is a semi-analytical computational method for solving Maxwell's equations in periodic structures such as diffraction gratings and photonic crystals. Developed by Moharam and Gaylord in 1981, RCWA expands the electromagnetic fields in each periodic region into Fourier series and couples the fields at interfaces, enabling accurate and efficient simulation of light diffraction, resonances, and wave propagation in structured 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.