Simulation results of few-mode signal propagation over graded multimode optical fibers with periodical slowly varying core diameter

Simulation of a few-mode signal propagation over multimode fiber link with differential mode delay compensators

“…In this paper the piece-wise representation [8] is also applied to simulate few-mode optical signal propagation along multimode fiber link composed from conventional multimode fiber 50/125 and RDMDF, providing DMD compensation. Single silica weakly guiding circular multimode fibers with the axial symmetric refractive index profile, limited by single outer cladding, are considered.…”

“…Single silica weakly guiding circular multimode fibers with the axial symmetric refractive index profile, limited by single outer cladding, are considered. In general case, the model, described in details in [8], takes into account DMD, higherorder mode chromatic dispersion, mode mixing, and power diffusion. Because the effectiveness of proposed and designed RDMDFs using for DMD decreasing is the main issue of this work, here mode interaction due to real fiber irregularity is neglected.…”

“…A real refractive index profile samples of different fiber generations, been measured by analyzer EXFO NR-9200HR, are considered as prototype of link fiber. To simulate laser excited few-mode pulse propagation, a time-domain model of piece-wise regular multimode fiber link [8] is applied. The model takes into account DMD, higher-order mode chromatic dispersion, and in general case mode mixing, and power diffusion.…”