The physical process of diffraction by planar gratings'is analysed, based on the generalized second-order coupled-wave theory.

本文从推广的二阶耦合波理论出发，对平条纹面光栅衍射这一物理过程进行分析。

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The diffraction characteristics of the phase mask for UV-written fiber grating is investigated using rigorous coupled-wave theory.

本文利用严格耦合波理论对用于光纤光栅制作的相位掩模的衍射特性进行了深入的研究。

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Modified coupled-wave equations are used to calculate the effect of grating shape on coupling coefficient of the second-order gratings.

利用改进的耦合波理论计算了具体器件结构中光栅形貌对二级光栅耦合系数的影响。

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At the same time, the Communist Party has a much broader concern: that middle-class dissatisfaction with stockmarket losses, coupled with working-class anger at the continuing wave of lay-offs at state enterprises, could threaten the legitimacy of the party's rule.

ECONOMIST: Casino capital