Artículos de revistas
Guided-wave modes in graded-index optical fibers by two-point quasi-rational approximants
Guided-wave modes in graded-index optical fibers by two-point quasi-rational approximants
Autor
Castro, E.
Cereceda, C.
Martín, P.
Puerta, J.
Institución
Resumen
En el presente trabajo, se obtuvieron soluciones analíticas aproximadas para la propagación de ondas en fibras ópticas con índice gradual en el caso de perfil parabólico. Los aproximantes obtenidos resultaron ser mas precisos que aquellas aproximaciones halladas previamente por otros autores. En este trabajo se usaron los aproximantes cuasi-racionales a dos puntos y los aproximantes de Padé. Se determinaron explícitamente los determinantes para los autovalores azimutales l = 0, 1, 2 y los modos m = 0, 1, 2, 3. Approximated analytic solutions for wave propagation in graded-index optical fiber have been found in the case of a parabolic profile. Approximants with high accuracy are presented that are much better than those found by other authors. A two-point quasi-rational method and two-point Padé approximants are used in this work. The approximants are explicitly determined for the azimuthal eigenvalues l = 0, 1, 2 and the mth mode numbers m = 0, 1, 2, 3.