%0 Journal Article
%T Modeling and Simulation of Piecewise Regular Multimode Fiber Links Operating in a Few-Mode Regime
%A Anton Bourdine
%J Advances in Optical Technologies
%D 2013
%I Hindawi Publishing Corporation
%R 10.1155/2013/469389
%X This work presents an alternative model of multimode fiber links with conventional silica weakly-guiding graded-index irregular multimode fibers under a few-mode optical signal propagation generated by laser source. The proposed model is based on the piecewise regular representation. It takes into account launch conditions, differential mode delay, both lower- and higher-order mode chromatic dispersion, differential mode attenuation, and mode mixing and power diffusion occurring due to real fiber irregularity and micro- and macrobends. We present some results of introduced model approbation with following pulse propagation simulations. A close matching with measured pulse responses at the output of test fibers is noticed. 1. Introduction Silica multimode graded-index fibers are used in a wide variety of applications ranging from on-board to in-premises networks links with length not more than 1¨C2£¿km. Since IEEE 802.3z standard was ratified and commercial available SFP transceivers with Vertical Cavity Surface Emitting Lasers (VCSELs) appeared on telecommunication market, multimode fibers became very popular both for in-building structural cabling systems (SCS) and typical distributed networks with backbone/vertical fiber cabling systems, private networks in premises, and campus environments. Nowadays the most top applications of multimode fibers are associated with data center SCS, high bit-rate storage area networks, and radio-over-fiber (RoF) techniques over already installed multimode fiber infrastructure inside building [1¨C3]. Modern commercial multi-Gigabit transmission transceivers are realized on Vertical Cavity Surface Emitting Lasers (VCSELs) or single-mode Fabry-Perot laser diodes (LD) [1¨C4]. Because emission from the conventional VCSEL usually consists of about 5 or 6 transversal modes with maximal azimuthal order not more than 3, and single-mode LD injects just fundamental and lower-order modes and , only several guided modes are excited in multimode fiber link [5¨C7]. Therefore optical signal propagates over multimode fiber link in a so-called few-mode regime, and passage to the simulation of a few-mode pulse transmission over multimode fiber requires taking into account both ¡°individual¡± dispersion parameters of mode component with particular order (amplitude, attenuation, delay, chromatic dispersion, etc.) and mode coupling. A variety of methods have been developed for modeling and simulation of laser-based multi-Gigabit data transmission over multimode fibers. Monograph [4] can be considered as fundamental complete basis work. The
%U http://www.hindawi.com/journals/aot/2013/469389/