应用光波的电磁场理论严格地推导了当入射光满足“临界反射”或“双正交反射”条件时，光的偏振态在反射过程不会发生改变。
With electromagnetic theory of light, We found that the polarization of the light kept the same when the reflection of incident light satisfied critical reflection or dual-quadrature reflection.
运用光波衍射理论，针对磁光盘建立了记录光场的数学模型。
With light wave diffraction theory, the mathematical model of optical field at the recording layer is developed for magneto-optical disk.
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.
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