A geometric ray model for the propagation of light in a step fiber is presented, and the cut-off conditions are derived.
提出阶跃光纤导光的一种几何射线模型，方便地求出了截止条件，并与光波导理论所得结果作了比较。
A geometric ray model for the propagation of light in a step fiber is presented, and the cut-off conditions are derived.
提出阶跃光纤导光的一种几何射线模型，方便地求出了截止条件，并与光波导理论所得结果作了比较。
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