光栅

Using phase mask to fabricate fiber gratings is a simple and effective method.

用相位掩模法制造光纤光栅是一种简单、有效的方法。

Rotary servo motor + ball screw up to 2 ~ 5μm, and the requirements of CNC-servo motors - even without coupling gap - thrust bearing - Cooling System - high-precision rolling guide - Nut Block - table closed-loop system as a whole transmission part to lighter, higher precision grating.

旋转伺服电机+滚珠丝杠最高达到2~5μm，且要求CNC-伺服电机-无隙连轴器-止推轴承-冷却系统-高精度滚动导轨-螺母座-工作台闭环整个系统的传动部分要轻量化，光栅精度要高。

In the height-calibrating method, after the calibration board is moved twice, the calibration matrix can be got from the relationship between the phase and the height of the calibration board.

通过移动标定平面到两个不同位置，得到标定位置处的光栅图像，根据平面间的相位差和高度差得到高度标定矩阵。

The study indicates that the center wavelength of FBG's reflected spectrum on the two polarization directions shift, and the reflectivity decreased with the increase of the twist angle. The longer wavelength produces"red shift". The shorter wavelength produces"blue shift". And the wavelength shift is basically same.

研究表明，随着扭转角度的增加，两个偏振方向的光栅反射谱中心波长发生移动且反射率降低，长波长的产生&红移&，短波长的产生&蓝移&，移动的波长量基本相同。

The influence of polarization of the inserted fiber on the interference spectrum is discussed.

讨论了级联长周期光纤光栅对之间光纤的偏振特性对干涉谱的影响。

The interference transmission spectrum of cascaded long-period fiber gratings, which is inserted a section of standard fiber, is investigated.

分析了由光纤级联的两个相同的长周期光纤光栅形成的干涉谱。

The absorption spectrum of iodine was recorded in the visible region using a HRD1 Double Grating Monochromator.

我们用HRD-1型双光栅单色仪记录了碘分子在可见光区域的吸收光谱。

The lasing wavelength stability of the fiber grating external cavity semiconductor lasers is focused on.

主要就可供DWDM系统选用的光源之一光纤光栅外腔半导体激光器的波长稳定性进行讨论。

In modern monitoring technology, raster sensor has been widely applied in the measurement of line displacement and angular displacement.

中文摘要：在现代测控技术领域中，光栅位移传感器在线位移、角位移测量中得到了广泛应用。

When illuminated with a broadband optical source at a fixed angle of incidence,linear translation of the grating always lead to a linear shift in the wavelength of the detected signals collected at a fixed angle.

考虑国内外的研究现状和结合现有的技术，西安某所开展了变栅距光栅位移传感器的研究，在样机实验中取得了圆满成功，并开始了从原理样机走向工程样机的研究。

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。