Σύγκριση μεθόδων

	Αυστηρή Ανάλυση Συζευγμένων Κυμάτων	Μέθοδος Διάδοσης Δέσμης
Πεδίο	Οπτική	Οπτική
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1981	1978
Δημιουργός	M. G. Moharam and T. K. Gaylord	Michael Feit and John Fleck
Τύπος	Diffraction algorithm	Paraxial propagation algorithm
Θεμελιώδης πηγή	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.
Εναλλακτικές ονομασίες	RCWA method, coupled-wave method, diffraction grating analysis	BPM, paraxial approximation method
Συναφείς	3	3
Σύνοψη	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.