光栅

An algorithm about picking element is presented in this paper: First,getting certain amounts of boundary points by contour tracing from a point near an element and calculating primal parameters; Then, picking the element completely by element tracing guided by these initial parameters, jumping over broken points and intersecting points; At last,deleting the picked element from the raster image and renewing other elements' information intersecting with the picked element.

本文提出一种图元拾取算法：首先从图元附近一点开始，经轮廓跟踪、参数拟合得到图元的初始参数；然后在初始参数引导下，对图元定向跟踪，跳过断点和交点，最大限度的拾取整个图元；最后在光栅图像上删除该图元，并恢复与之相交的其它图元的交点信息。

We solve the problem that the meridional curve transcendental equation cannot solve by Matlab, and discuss the influence of two curves for different grating constants and different incidence angles.

用Matlab软件解决了子午聚焦曲线超越方程无法解的困难；讨论了不同光栅常数和入射角度时对两聚焦曲线拟合程度的影响。

A new method to optimize mechanically-induced long-period fiber grating transmission spectra was demonstrated.

提出一种优化应力长周期光纤光栅的实验方法。

In this paper, the physical model of this kind of scheme is introduced, and the strict coupling wave method is used to calculate the optical character of the transmission grating under the Brewster angle.

提出利用偏振光沿布儒斯特角入射时具有的特性来实现降低光栅表面反射率的方案，介绍了这种方案的物理模型，并利用严格耦合波分析法进行了模拟计算。

A novel fiber Bragg grating with two transmission dips in 1310- and 1550-nm regions is proposed and inscribed by an infrared femtosecond laser.

利用红外飞秒激光制作了在1310纳米和1550纳米波段有两个峰值的新型光纤布拉格光栅。

The method of diffractive optical elements, such as processing and transmission grating dense optical material from the traditional extended to ordered nano-pore materials, is expected to apply to the manufacture of high performance diffractive optical elements.

该方法将衍射光学元件如透射光栅的加工由传统的致密光学材料扩展到有序纳米孔材料上，有望适用于制造高性能衍射光学元件。

Theoretical studies on transmission characteristics of fiber grating Fabry-Pérot cavity.

光纤光栅法布里-珀罗腔透射特性的理论研究。

In the thesis, we mainly studied theoretically and experimentally the nonlinear transmission properties, photo-induced grating, degenerate multi-wave mixing in bR film and their applications.

本论文从理论和实验两方面深入地研究了bR膜中的非线性透射特性、光致光栅、简并多波耦合及其应用等问题。

A transmission grating with an area of 1 mm × 1 mm, a pitch of 300 nm, and a gold thickness of 1 μm for X-ray imaging and microscopy is successfully fabricated by combining electron beam lithography, X-ray lithography, and electroplating.

利用电子束光刻、X射线光刻和微电镀技术，成功制作了面积为1 mm×1 mm，周期为300 nm，金吸收体厚度为1 μm的用于X射线显微成像的透射光栅。

The principle of the method is as follows: The method employs a transmission grating plate placed over a sample surface at a small distance h. According to diffraction theorym an incident light wave is divided into both reflected and transmitted diffraction waves at the grating plate.

该方法的原理如下：该方法采用了透射光栅放置在一个小的距离超过每小时板样品表面据衍射theorym事件光波分为既反映和传播的格板衍射波分歧。

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。