Simulation of a long-haul fiber optic link with a two-mode optical fiber
Burdin V.A., Bourdine A.V.

Povolzhskiy State University of Telecommunications and Informatics, Samara, Russia

Abstract:
Modern telecommunication networks approach the capacity crunch, which is associated with the so-called nonlinear Shannon limit. So, the passage to fiber optic links with few-mode optical fibers is considered as an alternative solution of the described problem concerned with high nonlinearity of conventional commercial single-mode optical fibers. Presently, various designs of few-mode optical fibers have been known, with the recently published works presenting experimental results demonstrating their potentialities for long-haul fiber optic links. A lot of models of long-haul fiber optic links with few-mode optical fibers have been developed based on which features of a few-mode optical fiber transport network were numerically simulated. This work presents the results of simulation of a 6000-km long-haul fiber optic link with a two-mode optical fiber and 100-km-per-span Erbium doped fiber optic amplifiers system under 100 Gbps DP-DQPSK data transmission. We studied the use of particular linearly polarized modes and optical vortices for signal transmission. The computation results were compared with the simulation of the same fiber optic link with a single-mode optical fiber under the identical conditions.

Keywords:
system of coupled nonlinear Schrödinger equations; few-mode optical fiber; fiber optic link; Split Step Fourier Method; Gaussian approximation; linearly polarized modes; optical vortices.

Citation:
Burdin VA, Bourdine AV. Simulation of a long-haul fiber optic link with a two-mode optical fiber. Computer Optics 2017; 41(4): 489-493. DOI: 10.18287/2412-6179-2017-41-4-489-493.

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