光纤

We indicate that when wavelength number is larger than 16, even 8, all of the networks show good small blocking performance. Further, we discuss different aspects that affecting blocking, including routing, wavelength number, wavelength assignment, wavelength conversion, multi-fiber and network connectivity. We find out that increasing wavelength or implementing multi-fiber can reduce blocking dramatically while in light loads (＜0.4Er), fixed alternate routing or First Fit wavelength assignment can improve the performance to some extent.

为了进一步获得更优的阻塞特性，研究比较了影响阻塞率的几个重要方面，包括路由（固定路由与固定可选路由）、波长数与波长分配算法、波长变换与多光纤、网络连接度，结果表明阻塞特性通过增加波长或采用多光纤可以得到明显的改善，在负载较轻时(＜0.4Er)，改用可选路由方式或First Fit波长分配算法也可以一定程度地改善阻塞率，但是这种改善受网络连接度和波长数的影响比较明显。

The light transmission attenuation constant is achieved to determine rupture location of composite materials.

同时对空心光纤的衰减特性做了实验研究，得到了空心光纤的衰减常数，并且应用于断裂测量。

This paper presents characteristics and advantages of the fiber-optic channels application to integrated avionics system s.

介绍了光纤通道在综合航电系统中的应用特点及优势，强调在综合航电系统中使用光纤通道必须突破的关键技术。

On the basis of comparing present detection techniques, we propose a new optical beam deflection technique with a single fiber.

在比较了已有的各种测试声表面波手段的基础上，提出了基于光偏转技术的单光纤测试法，并设计完成了一套光纤光声传感器。

In order to investigate the effects of parameters, based on the theory of thermal-structural-electromagnetic multiphysics field interaction, the biconical models of the fused PANDA fiber coupler were given.

为了从理论上分析各参量对保偏耦合器传输特性的影响，基于热结构电磁多物理场耦合理论，建立了熔锥型熊猫光纤耦合器双锥模型，应用有限元法，分析了各参量对熊猫光纤耦合器传输特性的影响。

Through theoretical and experimental research, the viscoelastic mechanical model of optical fiber coupler in the process of fused biconical taper was established, with which, the numerical analysis under non-uniform temperature field was realized.

基于理论与实验研究，建立了光纤耦合器熔融拉锥过程的粘弹流变力学模型，并给出了光纤耦合器非均匀温度场条件下的流变过程数值分析，获得了拉锥速度、熔融温度等流变工艺参数对器件应力分布与器件性能的影响规律。

The numerical analysis model of fiber coupler in the process offused biconical taper is constructed successfully. The numericalanalysis of fiber coupler in the process of fused FBT is accomplishedwith finite element software.

建立了光纤耦合器熔融拉锥有限元计算模型，实现了光纤拉锥流变全过程数值仿真，可预测分析器件制造参数对流变制造过程的影响。7。

Fiber coupler is one of the most important devices among fused taperfiber devices. Its usage ranks second among the optical passive devices.It is used for separating or coupling light. At.present, it is fabricated withfused biconical taper technology at large.

熔锥型光纤器件中最为典型的器件是光纤耦合器，其用量在光无源器件中居第二位，其功能是使传输中的光信号在特殊结构的熔锥区发生耦合，实现分光。

Influences of structure parameters and incident wavelengthon the birefringence are also analyzed.

我分析了光纤结构参数和波长变化对光纤双折射的影响。

Simulation results show that the birefringence of the PCF can be greatly improved under optimized parameters.

模拟结果表明，光子晶体光纤的双折射可以在优化的参数条件下获得很大提高，光子晶体光纤的非线性系数也可以同时得到提高。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。