Diseño de una rejilla inclinada de bragg basada en fibra óptica de dos modos para reducción del retardo modal

Abstract

The information rate in multimode fiber optic networks decreases with great performance due to the differential modal delay since it limits the bandwidth of the cabling, the dispersion limits the speed and the dispersion effect increases with the length of the fiber optic link. , several optical techniques have been proposed to solve this problem. This article proposes a non-uniform Bragg grating on a two-mode optical fiber, it is acting as a mode converter from LP11 to LP01, its optical and physical parameters are optimized, achieving a 18mm grating, refractive indices of the core and cladding respectively are ( ncore = 1.4490 y ncladding = 1.4454), the perturbed refractive index profile is (𝐴 = 0.005), attenuation coefficient of the index change distribution depending on the core material is ( 𝛼 = 0.2µ𝑚−1 ), an amplitude variation refractive index of (𝛥𝑛𝐴𝑐 (𝑧) = 0.8) and a Chirp factor, 𝐶 ≤ 10−5𝑚−1