Yang S, Yadlowsky M J, Hjelme D R, Mickelson A R
Appl Opt. 1993 Oct 20;32(30):5997-6005. doi: 10.1364/AO.32.005997.
An interlaboratory measurement round-robin was conducted by the University of Colorado and three industrial members of the Electronic Industries Association. A computational definition of mode transition matrices (MTM's) is presented, and its relationship to the basic theory of power propagation in multimode fibers is detailed. Measured data from the round-robin were used to calculate MTM's for the test components, which included four connectors, two sections of fiber cable, two power splitters, and two short fiber segments. The diagonal elements of the (2 × 2) MTM's determined from the near-field data were found to have a laboratory-to-laboratory standard deviation of approximately 10% of the average value. The off-diagonal elements were found to have a standard deviation approaching their mean value. The inherent launch dependence of MTM's is investigated as a source of the observed variation. Other sources of uncertainty such as errors in determining the core radius are alsoconsidered. Finally the implications of these results for the problem of characterizing components' intensive multimode fiber systems are discussed.
科罗拉多大学和电子工业协会的三名行业成员进行了一次实验室间测量循环测试。本文给出了模式转换矩阵（MTM）的计算定义，并详细阐述了其与多模光纤中功率传播基本理论的关系。循环测试的测量数据用于计算测试组件的MTM，这些组件包括四个连接器、两段光缆、两个功率分配器和两个短光纤段。从近场数据确定的(2×2)MTM的对角元素在实验室之间的标准偏差约为平均值的10%。非对角元素的标准偏差接近其平均值。研究了MTM固有的发射依赖性，将其作为观察到的变化的一个来源。还考虑了其他不确定因素，如确定纤芯半径时的误差。最后讨论了这些结果对表征密集型多模光纤系统组件问题的影响。
