查询词典 optical centre

With the development of optical communication system from point-to-point to multi-wavelength optical network, optical add/drop multiplexers are considered key components in wavelength-division-multiplexing system.

中文摘要随着光通信系统从单波长点对点的光线路系统向多波长网络化演进，光分插复用器作为光传输网的重要器件逐渐变得越来越重要。

It consists of a traveling-wave semiconductor optical amplifier, a wavelength selecting element, an optical coupler and in-line optical isolators. All of the components in the setup are fiber pigtailed and commercially available. We have solved the wavelength-dependent rate equation applicable to the FRSLs.

针对这种结构的特点，首先，从理论上建立了FRSLs的物理模型，考虑到行波式半导体光放大器增益谱特性，引入Lorentz型波长修正项，得到适用于FRSLs的单模行波速率方程，继而通过求解方程，推出了光子流密度分布的解析表达式。

The polarization aberrations of an optical system were analyzed to control the polarization effects and to improve the optical performance of the transmitting rotationally symmetric optical systems.

为了控制透射式旋转对称光学系统中的偏振效应，提高系统的光学性能，对该系统中的偏振像差进行了分析。

The design principle of the laser receiver with wide FOV for the laser command guidance and laser-beam riding guidance is introduced. A mathematic model of receiving light field is presented. The formula for the viewing angle of the detecting optical system was derived according to the diffraction light field of the oblique incidence parallel light. Taking a detecting optical system with the collecting objective for example, the design characteristic that the receiving optical system needs not only an extra large relative aperture but also an unvignetting receiving performance is discussed on the premise of meeting the requirement of 1064nm WFOV laser receiver.

介绍激光指令制导和激光驾束制导的大视场激光接收机的设计原理，给出接收光场的数学模型，由斜入射平行光的衍射光场推出探测光学系统的视场角公式，根据1064nm大视场激光接收机技术要求，以聚光物镜型探测光学系统为例，探讨接收光学系统既须具备特大相对孔径，又须具备无晕接收性能的设计特点，采用窄带干涉滤光镜进行光学滤波降噪。

These study results confirm that shorter laser pulses induced optical Kerr effect can reflect the nonlinear optical properties of the materials more exactly, which can provide the new ideas and references on studying the interaction of ultrashort pulses and nonlinear optical materials.

这一研究成果证实利用更短的光脉冲诱导光Kerr效应更能反映材料的光学特性，为超短脉冲激光与非线性光学材料作用的研究提供新的思路和参考。

On the radio and television group property management staff of the Centre for Research on incentives Abstract Radio and TV Group Property Management Centre staff of radio and television group is the core component of the employees, their group of radio and television have played a crucial role.

摘 要：广电集团物业管理中心员工是广电集团员工的核心组成部分，他们对广电集团的发展发挥着至关重要的作用。

However, it should be noted that much will be commercial supporting facilities of mixed-use development, such as The Agora, Capland Centre and Qingdao World Trade Centre.

值得注意的是，众多供应是支持综合商业体的商业部分，如万邦中心、凯悦中心和青岛国际贸易中心等。

The Amari Boulevard Hotel also offers a fitness centre, outdoor pool with sun deck and pool bar, a business centre and excellent banqueting and convention facilities.

酒店以美丽迷人的花园为背景，提供多种休闲娱乐设施，包括两座泳池、儿童泳池、网球场、乒乓球和观鸟台，附近还有高尔夫球场，骑大象之旅，以及各种低风险的户外活动。

The umbrella Socialist group in the European Parliament lost as many as a quarter of its seats, leaving the mainstream centre-right group, the European People's Party, more dominant than before, despite the imminent departure of British Conservatives who plan to form a new anti-federalist centre-right group.

欧洲议会的联合社会党失掉了四分之一的席位，使得主流的中右翼欧洲人民党更有优势，尽管现在英国保守党计划分离出来组建一个新的反联邦制中右翼也无法阻挡这种趋势。

On this side of the road, the Bahai Centre, is a centre for peace and learning, and you have most respectfully and most beautifully decided to hold your conference here, at the entrance to the city.

在马路的这边上，是巴海教中心，是一个为和平、为学习而建设的中心；而您们最尊敬地、最美好地决定了在这里，在这个城市的入口举行您们的会议。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。