查询词典 optical cable

Optical signal that the receiver receives , shaking the light wave produced with the receiver , on terms that meet the phase place and match and the amplitude is matched, mix it frequently , output the square of intermediate frequency signal electric current in direct radio of sum of the intensity of optical signal produced with optical signal , and receiver .

接收机接收到的光信号、与接收机内部振荡所产生的光波，在满足相位匹配和振幅匹配的条件下，进行混频，输出与光信号、和接收机产生之光信号强度之和的平方成正比的中频信号电流。

The now available long-range supervision system at home and abroad is based on the optical fiber mostly, and if the optical fiber runs into that the machinery lashes and colliding optical fiber may split or break. Once splitted, it's hard to be restored because of the sophisticated equipment, and ordinary user can't restore it by means of the welding at all. Moreover the high price of light transmitter and light receiver limits the application and popularization.

国内外现有的远程监控系统大多基于光纤，而光纤如果遇到机械冲击、碰撞等都会造成光缆断缆或断芯，光缆断裂后，很难快速修复，且修复设备复杂，普通用户根本无法进行焊接修复，再加上光端机价格较高，这些都限制了光纤远程监控系统的应用和普及。

This device is characterised by that its beam-splitter unit is the above described one, the first focusing elements (24) are placed at two opposite sides as seen from the direction of the beam arriving to the semitransparent reflective surfaces of the optical beam-splitter unit (22) i.e. from the receiving direction (5) and the common optical axis (23) of the first focusing elements (24) is at right angles to the receiving direction; outside the first focusing elements (24) on both sides a mirror is placed in front of each eye, and the semitransparent reflective surfaces of these mirrors enclose an angle delta 45 DEG +-15 DEG with the above mentioned optical axis (23), and the intersection line of these reflective surfaces is parallel to the mirror crossing intersection line (4) of the semitransparent reflective surfaces.

该双目图像显示装置的特征是其光学分束器单元是所述的单元，从到达光学分束器单元(22)的半透明反射面的光束方向看，即从接收方向(5)看，第一调焦元件(24)放置在相对的两侧，并且第一调焦元件(24)的共同光轴(23)垂直于接收方向；在位于两侧的第一调焦元件(24)的外面反射镜放置在每一只眼睛的前面，并且这些反射镜的半透明反射面与所述共同的光轴(23)围成夹角δ45°±15°，并且这些反射面的交线平行于半透明反射面的交叉反射镜交线(4)。

Magneto-optical recording has the advantage of both magnetic recording and light recording. With the development of the magneto-optical material theory and the preparing methods, the researches on measurement of magneto-optical characteristic are very important.

磁光存储兼有磁存储与光存储的优点，随着磁光材料理论与制备方法的发展，磁光记录介质的磁光特性检测技术的研究显得尤为重要。

Experiments prove that the optical power signal acquisition system is reliable and practical,and it provides a good man machine interface. It can be used to monitor the optical power signal in various optical fiber communication systems.

该系统开发效率高，并通过实验证明其具有良好的人机交互能力，可靠性高，实用性强，能为各类光纤通信系统提供光功率信号监测功能。

In order to find a powerful assistant computation tool for further analysis and design of multilayer optical coatings,an analytical model is mathematically established for accurate calculation of the first and second derivatives of the spectral coefficients of multilayer optical coatings with respect to layer parameters like thickness,real refractive index and extinction coefficient. It is based on the matrix theory of calculating the spectral coefficients of multilayer optical coatings and is achieved by perfectly using the trace operation of matrix.

为了寻找一种膜系深入分析与设计的有力辅助计算工具，从光学薄膜光谱系数的矩阵计算理论出发，基于对矩阵求迹运算的巧妙运用，从数学上建立了准确计算膜系光谱系数关于膜层几何厚度、实际折射率和消光系数等膜层参数的一阶和二阶偏导数的解析模型。

Optical fibers are widely used in the optical communication field, while optical tweezers are non-invading micromanipulation.

摘 要 光纤是光通信领域广泛应用的元件，光镊是非侵入式微操作工具。

It can be used to study the optical properties of each interface, which is of great significance in the field of ophthalmology and optometry. The optical structures and properties of the several representative eye models were summarized. And the trend of development of the optical model of human eye, i.e., individuation and precision was presented.

通过对国内外模型眼的研究与发展的介绍，总结了各种典型人眼模型的光学结构与特性，并给出了人眼光学模型的研究发展趋势－个性化与精密性。

Secondly, three kinds of mathematics model of optical vortex beams were introduced here. Then the propagation dynamics of optical vortex beams through the non-axis symmetry system is studied, this chapter includes the introduction of the symmetry vortex beam and the non- symmetry vortex beam, the deduction of the Collins diffract integral formula for the non-axis symmetry system, and the transformation of the vortex beam passing through the non-axis symmetry system has been described by using the numerical simulation. Then the general calculation for the orbit momentum of vortex beams, the matrix form for the orbit momentum of vortex beams, and the photon method to describe the orbit momentum of vortex beams are also introduced here. Finally, the interference about optical vortex beams was studied.

本文对涡旋光束进行了较为全面的介绍和研究，主要内容包括：（1）光学涡旋光束的基本理论，主要是介绍了单个光学涡旋光束在柱坐标中的一些表征，涡旋光束的奇异相位和光学涡旋的相位结构；（2）光学涡旋光束的三种数学模型；（3）光学涡旋光束在非轴对称光学系统中的传播动力学，其中介绍了对称涡旋光束与非对称涡旋光束，推导了非轴对称光学系统的 Collins 衍射积分公式，并利用计算机模拟图描述了对称涡旋光束经过非轴对称光学系统后涡旋形态的改变；（4）涡旋光束轨道角动量的一般计算，涡旋光束轨道角动量的矩阵形式，光子法描述涡旋的轨道角动量；（5）涡旋光束的干涉。

In the apparatus design aspect, at first we design an optical tweezers instrument with one optical trap,and introduce detailedly the selection rule of the every structure of the instrument,especially discuss the selection of the laser optical source and the microscope object lens.

在仪器的设计方面，对如何建立一套单光阱光镊仪器系统做了初步的调研，详细介绍了单光镊系统各结构的选取原则，其中重点讨论了激光器光源和显微物镜的选取。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"