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本文叙述多模光纤传输特性的基本性质。在理论上和实验上叙述了传输函数线性组合定律。采用稳态模式激励器和刚好接在每个接头之后的模式搅拌器可确定连接的渐变型折射率纤维的传输函数。由每根纤维传输函数的线性组合计算得到的总的函数与模量结果非常一致。也讨论了通过加模式搅拌器来展宽传输频带的效应。
This article describes the basic properties of multimode fiber transmission. The theorem of the linear combination of transfer functions is described theoretically and experimentally. The transfer function of the connected graded index fibers can be determined using a steady-state mode actuator and a mode stirrer just after each connector. The total function calculated from the linear combination of each fiber transfer function is very consistent with the modulus results. The effect of broadening the transmission band by adding a mode stirrer is also discussed.