Efecto del perfil del índice de refracción de una fibra multimodo compensada sobre la dispersión modal

Abstract

This paper reports the effect of refractive index profile irregularities of a multimode fiber according to the Cambridge 81 model on the differential modal delay when using optical compensation using a few-mode optical fiber, on a 400 m link with operating wavelengths of 850 nm and 1550 nm. The results show that three groups are formed in terms of differential modal delay, defined by the central irregularities, while the outer irregularities do not affect the compensation, although the modal filter length affects significantly at 1550 nm, achieving a maximum delay of 1.28 ns.