透射光栅

The transmission characteristics of the filter composed of a Sagnac loop and fiber Bragg gratings are studied in detail.

详细分析了由光纤光栅和萨尼亚克环构成的透射滤波器的特性。

It was found that the transmission spectrum of the filter is the cosine function modulated reflection spectrum of the fiber grating.

结果表明该滤波器的透射光谱是余弦函数调制后的光纤光栅反射光谱。

The intensity of grating diffraction spectrum is obtained by the Fourier series expansion of the transmissivity function. Finally, the design feasibility is analyzed by comparing the minimum signal spectral intensity with the maximal spectral intensity of the background light and the noise intensity.

通过对透射率函数的傅立叶级数展开，得到光栅衍射谱线的强度，对信号光谱线的最小强度、背景光谱线的最大强度和噪声强度的比较，得到设计的可行性。

In discussing the properties of reflection and refraction of fiber grating, the coupled-mode equation, envelope function, transform matrix formalism, multilayer and optical path approximation are used for describing the linear and nonlinear characteristic of optical fiber grating.

在分析光栅的反射和透射规律时，采用了耦合模式法，包络函数法，转换矩阵法，多层介质薄膜法以及光程法，这些方法虽然具有不同的数学和物理模型，但在分析光纤光栅这一特殊的波导结构时，可充分展现它的线性和非线性特性。

In studying the extraordinary enhancement of microwave transmission through single subwavelength slit,we also examined the influences of the groove number and the periodical parameters on the enhancement factor in detail.

在研究微波通过亚波长金属狭缝的超强透射实验中，我们还详细研究了表面周期结构数目和表面衍射光栅结构的几何参数对超强透射强度之影响。

Grooves play an important role in the transmission efficiency of the metallic grating.

利用时域有限差分算法模拟了二维金属光栅的电磁场，分析了金属光栅透射率随波长的变化。

The EDFA dynamic gain equalizer based on HPDLC grating is developed according to the character of HPDLC grating's transmission spectrum.

根据聚合物分散液晶光栅的透射谱特性和其电压可调控特性的研究，提出了基于聚合物分散液晶光栅的掺铒光纤放大器动态增益均衡器。

The selected subject gives a general design of the grating auto testing instrument, by using the characteristics of orthogonal A and B signals output by optical encoder and symmetrical black and white linear transmission grating bar, and analyzing the means of the high electrical level of signals change to number of counter pluses.

本文通过分析了编码器输出两路信号的正交性(相位相差90°)与直线透射式光栅黑白栅条的分布均匀性的特性，应用把高电平宽度转换为计数脉冲的个数的测试方法，给出了光栅自动测试仪的总体设计方案。

The numerical calculation shows that the space distibution of the electromagnetic field in each sub-micro-layer changes with the varing transmission depth in the relief grating, the space distribution in each sub-micro-layer is uniformer than that in isotropic grating and the optical parameters of the anisotropic relief grating and the incident beam have a large impact on the space distribution of the electromagnetic field in relief grating and so on.

数值计算表明，光波场光强的空间分布随透射深度的变化而变化，各向异性介质光栅体内光波场的空间分布相对各向同性介质要均匀，光栅材料的性质参数和光束的入射参数对光波场光强的空间分布有较大的影响等。

Both transmission and reflection dispersion, with regard to parameters and frequency detuning, are quantitatively studied.

研究表明：光纤布拉格光栅的透射色散和反射色散在禁带边缘有很大的色散；在禁带内布拉格波长两侧，以及禁带外两侧，光纤布拉格光栅具有相反的色散特性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。