Then the mode series of step index planar dielectric waveguide and circular optical fiber are studied, including propagation modes and radiation modes.
接着推导了阶跃折射率平面介质波导和圆光纤的正交模式——包括束缚模式和辐射模式。
The business concentrative degree is an important index which reflects different management modes and size extension ways of firms, such as the specialization, diversification and so on.
业务集中度是反映企业专注于专业化、多元化等不同经营模式和不同规模扩张方式的一项重要指标。
An index system for levee failure risk assessment was established based on the analysis of factors and modes of levee failure.
通过对堤坝失事模式和影响因素分析，确定了堤坝失事风险评价指标体系。
This paper analyses the distribution modes selection of the food cold chain for 2008 Olympic Games with the method of fuzzy evaluation, and USES AHP to ensure the weight of the index.
通过选取了模糊综合评判法对2008年北京奥运会食品冷链配送模式选择进行分析，在综合评判法中采用了层次分析法确定评价指标的权重。
For different values of the effective refractive index, the air-guided modes can exist in different forms in part of PBGs.
依据有效折射率的不同，部分带隙中的空气-导模将以不同的形式存在。
By the program composition for a given calculation example, the reliability index under various anchor failure modes was obtained.
编制程序对算例进行分析计算，得到了锚杆系统不同破坏模式下的可靠指标。
The handedness of the helical wave fronts of the LG modes is linked to the sign of the index land can be chosen by convention.
LG模的螺旋波前的左右手习惯是和l的特征相联系的，能够按规定进行选择。
The analytic formulas of propagation constants of axisymmetric modes in a Kerr law nonlinear graded index optical fiber are derived.
导出了克尔非线性梯度折射率光纤轴对称模传播常数的解析公式。
Compared with the case of positive refractive index structural defects, the influence of the interaction between defects on defect modes is stronger, the spectrum-width of defect mode is broader.
与正折射率缺陷情形相比较，负折射率缺陷间的相互作用对缺陷模的影响更大，局域模谱线更宽。
The local defect modes is investigated in photonic crystals with negative refractive index structural defects.
研究了含有负折射率缺陷的光子晶体中的局域缺陷模。
Then the simplified model for the LPFG is deduced with ignoring longitudinal coupling of modes and coupling of cladding modes themselves, and also assuming the modulation of refractive index exis...
忽略轴向的模式耦合以及包层模式之间的相互耦合作用，并认为折射率指数的调制只存在于纤芯中，建立了简化的长周期光纤光栅数学模型。
A new refractive index sensing scheme based on the cladding modes of fiber Bragg grating (FBG) is presented.
提出了基于光纤布拉格光栅(FBG)包层模式的折射率传感方案。
According to the number of non-absorbable modes and the number of all the propagating modes, we have obtained the absorption efficiency of graded-index DCF.
最后将不被吸收的模式数与光纤总传播模式数作比较，得出渐变折射率DCF的吸收效率。
Besides, in the SMCW structure, the thickness of the guiding layer can be enlarged to submillimeter scale and can contain ultrahigh order guided modes with mode index of over 1000.
另外，对称金属包覆波导的导波层厚度还可以扩展至亚毫米甚至毫米量级，并因此能够容纳模序数上千的高阶导模。
It is revealed that the effective refractive index and the DC coupling coefficient, as well as the ac coupling coefficient of odd order modes, will be decreased with the increase in wavelengths.
研究发现包层膜有效折射率、直流耦合系数及奇数阶次的交流耦合系数都随着波长的增加而减小。
The novel characteristics of guided modes in the chiral negative refractive index fiber are investigated theoretically in this letter.
对手征负折射率光纤中导模的新颖特性进行了理论研究。
The novel characteristics of guided modes in the chiral negative refractive index fiber are investigated theoretically in this letter.
对手征负折射率光纤中导模的新颖特性进行了理论研究。
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