研究目的
theoretical research of ability for 10GBase-LX channel implementation over 100 μm core MMFs
研究成果
In spite of uncontrolled launching conditions, corresponding to connection via typical fiber optic adapter, simulated as connection with angular misalignment θ=4.20o between standard singlemode optical fiber (ITU-T Rec. G.652) of source pigtail and link optical fiber even MMF with OM2+/OM3 refractive index profile scaled up to 100 μm core keeps pulse envelope almost for distance up to 0.5 km with total dispersion not more 85 ps. The maximal MMF lengths was localized to provide the least reference Q=7.04 for BER=10-12: this distance is L=0.286 km under a total pulse dispersion D=62.329 ps and Q=8.236
研究不足
The model requires fast and simple method for analysis of the optical fibers with complicated refractive index profile form close to profiles of real commercially available fibers. The simulation is focused on guided modes, and power loss due to component transformation from guided to leaky mode, and reflections are indirectly taken into account.
1：Experimental Design and Method Selection:
Utilizes an earlier developed model of piecewise regular multimode fiber optic link operating in a few-mode regime to simulate laser-excited pulse propagation over irregular 100 μm core MMF. The model is based on piecewise regular representation combined with general approach of split-step method to simulate processes of mode mixing and power diffusion due to mode coupling.
2：Sample Selection and Data Sources:
Considers single silica weakly-guiding circular MMFs with arbitrary axially symmetric refractive index profile with single continue outer claddings. Fiber irregularity is considered as core diameter variations, assigned by array taken from data protocols of fiber diameter measurements.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The fiber is divided into regular spans with length Δz. Inside of the span fiber geometry parameters are considered as constant, and modes propagate independently without interaction and mixing. Micro- and macro bends are simulated by random equivalent low angular misalignment at the boundaries of regular spans.
5：Data Analysis Methods:
The resulting pulse response at the receiver end of irregular multimode link is computed by inverse Fourier transform and complex conjugate operations.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
