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The optical soliton propagation in monomode optical fibres with third-order dispersion is reinvestigated by using variational method. The evolution equations for optical soliton parameters are found, and self-wave-peak shift phenomena is explained quantitatively.

用变分法重新研究了单模光纤中的三阶色散对光孤子传输的影响，找到了光孤子参数的演化方程组，定量地解释了光孤子的自波峰漂移现象。

Carrier suppression double sideband optical signal with 40 GHz repetitive frequency is generated by using an optical phase modulator along with optical filtering technique.

在中心站采用相位调制器结合滤波的方法产生重复频率为40 GHz的载波抑制双边带毫米波信号，利用交叉复用器分离开毫米波信号的上下边带，其中的一个边带强度调制数据速率为2.5 Gbit/s的下行基带信号，另一个边带被发送到基站调制上行传输的基带数据。

All-optical wavelength conversion based on transient cross phase modulation of semiconductor optical amplifieris a promising approach to achieve high-speed all-optical signal processing.

采用半导体光放大器中的瞬态交叉相位调制效应是实现高速全光信号处理的有效途径。

It is found that the changes resulted from the inclination of the moving mirror consists of three parts: the stationary OPD due to the optical beam deflection,the offset OPD due to the different ray in the direction perpendicular to the optical axis,and the offset from the center of the deflected beam to the optical axis.

结果表明，光束偏转带来的误差分为三部分：光束偏转导致整体增加的恒定光程差，垂直光轴方向因不同光线而引入的偏移光程差以及偏转光束中心相对于光轴的偏移量。

Space optical system, especially space infrared optical system, cryogenic optical system and some huge space-based telescopes, all work in the environment where there is strong radiation (such as Sun etc.) out of the field of the system. Because of diffraction of the entrance pupil and diffuse scatter of all inner surfaces, the strong stray radiation will reach the detector of the system.

空间光学系统，特别是空间红外光学系统、低温光学系统以及某些大型空间望远镜，都工作在系统视场外有强烈辐射源的&恶劣&环境中，这些强烈杂光辐射经过光学系统孔径的衍射，以及结构与光学件表面的散射，到达系统像面形成杂光。

Firstly,the effect of aberrationsof the optical system on Gaussian beams whose incident position does not coincide with thecenter of the pupil for the aberrated optical system has been analyzed,then we evaluate theStrehl ratio of the beams as a function of their incident position and the kind of aberrationspresented in the optical system.

首先，得到了初级和次级光学像差函数在光束坐标系中的表达式，继而给出了特定像差系统的Strehl比，并通过计算机模拟，得到了系统的SD值与光束入射位置和光束半径的关系曲线图。

At the same time, optical channel drop filters, switches, modulators and optical delayers based on optical microcavities have attracted many interests and show their excellent properties in the WDM system.

同时基于光学微腔的光学滤波器、光开光、光调制器和光延迟器等光电子器件在波分复用系统中也得到广泛关注并体现出优异的特性。

The invention relates to the optical field, in particular to a method used for regulating the optical length of etalons, wave plates and other optical elements.

本发明涉及光学领域，尤其涉及一种调制标准具、波片及其他光学元件光学长度方法。

This paper discussed the basic character of optical fiber gas sensor, and introduced several methods of absorptive spectrum optical fiber gas sensor., and described the principles of the methods in detail, and analyzed the factors of affecting precise of absorptive spectrum optical fiber gas sensor.

简述了光纤气体传感器的基本特性，介绍了几种光谱吸收光纤气体传感的方法，详细阐述了各种传感方法的原理，分析了影响光谱吸收光纤气体传感精度的因素。

Optical fiber winding was a important technique in optical fiber guided missile and lag angle controlled by lead screw subsystem was a key factor in optical fiber precise winding .

光纤自动精密缠绕是导弹光纤制导中的一项重要技术，其中滞后角是光纤精密缠绕中的关键因素，滞后角的控制是通过丝杠子系统来完成的。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。