Dr Hess envisages a ray of light travelling down an optical fibre made from two materials: a core with a negative refractive index and an outer sheath with a positive one.
赫斯博士构想出一个画面，即一道光正穿越于一个由两种材料制作的光导纤维，一种是具有正折射指数的纤维核，另一种则是具有正折射指数的外围。
On the histograms of their redshift, optical luminosity and average optical X-ray spectral index, it is found that X-ray selected quasars are distributed at the low ends of plots of these parameters.
发现在它们的红移、光学光度以及平均光学-X射线谱指数的直方分布图上，X射线选择类星体统计上都分布在这些参数图的低端。
The relation between the stress along the optical axis of trigonal crystallographic system and the refractive index is established.
运用折射率椭球分析晶体的弹光效应，给出了三方晶系沿光轴方向的应力与折射率的变化关系。
Low shrinkage, low optical absorbance, low refractive index adhesive composition.
低收缩率，低光学吸收率，低折光指数粘合剂组合物。
Then the mode series of step index planar dielectric waveguide and circular optical fiber are studied, including propagation modes and radiation modes.
接着推导了阶跃折射率平面介质波导和圆光纤的正交模式——包括束缚模式和辐射模式。
Optical glass with high refractive index and high dispersion are used more and more as optical design trend to miniaturization and digital.
高折射率高色散光学玻璃在目前小型化和数字化的光学设计中的用途越来越广。
Is mainly used as additive for special optical glass and fibre glass slice with high index of refraction for electronic microscope and energy-saving light.
主要用作特种光学玻璃和光学纤维，高折射电镜片和节能电光源的添加剂。
Based on the diffraction imaging theory, we developed an analytical formula of Verling Glare Index of optical system by "balck spot" method.
根据光学衍射成像理论，建立了黑斑法测量光学系统杂光的杂光系数解析式。
This paper Outlines kinds of index of eyes optical effect and some different testing methods of intraocular lenses optical quality.
概述了眼睛视觉效果的各项指标以及人工晶体视觉质量的不同检测方法。
Its refractive index is higher than that of the traditional optical fiber material, silica, so silicon nitride has good optics confinement property.
其折射率比传统用作光纤的石英的折射率高，对光有较好的约束性能，因此在光波导方面可能会有更好的应用前景。
Under a certain deliver distance and the light power, the different sub-carries number to exist a best optical modulation index, making the system's carrier-to-noise ratio biggest.
一定的传输距离和发射光功率情况下，不同的子载波数存在一个最佳的光调制指数，使得系统载噪比最大；
When irradiated by two-beams, the sample can set up refractive index grating, and the optical holographic storage was achieved.
而且样品在双相干光束作用下，可建立光折射率光栅，并实现了光全息存储。
Modal field distributions and relations between optical power and modal index are given.
论文给出了模场分布和光功率与模折射率的关系。
The Gaussian index profile of a diffused optical waveguide is approximated by an appropriate polynomial, and the asymptotic solutions of the mode efficient index is derived in a analytical form.
本文用适当的多项式函数近似扩散光波导的高斯折射率分布函数，推导了导模有效折射率的解析形式渐近解。
Refractive index, chromatic dispersion and absorption coefficient are material figures of merit for ultrafast all optical switch.
折射率、色散和吸收系数是用于超高速全光开关的光学材料的重要品质指数。
Based on an analysis of rheology and mass transport principle, a mathematical model was formulated for describing the co-extrusion and diffusion process of graded index polymer optical fiber (GI POF).
基于流变学原理和质量传递原理的分析，建立了一个能够描述渐变型聚合物光纤(GIPOF)共挤扩散制备过程的数学模型。
The change of the refractive index controlled by the incoherent irradiation can be applied in the all optical switch.
这种在非相干辐照控制下折射率的迅速改变有望应用于全光学开关器件。
The paper mainly introduces the design project of HFC forward transmission network in Antu County, including scheme, technique index and system index testing of optical cable transmission network.
主要介绍安图县HFC正向传输网络方案的设计，包括光缆传输网络方案、技术指标及系统指标验证。
The parameters of the optical slab glass waveguide (refractive index and thickness of thin film) were measured by a new technique for using the prism coupler, i. e., leaky mode method.
由使用棱镜耦合器的一种新技术即漏模法，测量了平板玻璃光波导的参数(薄膜的折射率和厚度)。
Based on the combination of theory and practice, this paper discusses the formation of refractive index gradient in optical glass and related questions of optical quality in the production processes.
本文在理论和实践相结合的基础上讨论了光学玻璃内部折射率梯度的形成和生产实践中有关光学的质量问题。
The step index profile optical waveguide is the fundamentals of all other optical waveguide devices theoretically.
阶跃折射率光波导在理论上是所有其它光波导器件的基础。
Variable Angle spectroscopic ellipsometry (VASE) is a instrument for measuring optical film refractive index and thickness and is a powerful technique for research on new materials and processes.
可变角度的光谱椭偏仪(VASE)是一种测量光学薄膜折射率和厚度的仪器，它对于新材料和新过程的研究是一种强有力的技术手段。
A numerical model of atmospheric optical refractive index structure parameter is presented.
提出了一种大气光学折射率结构常数的数值模式。
The results show that it is a relatively simple and exact method for using transfer function method to deal with the optical waveguides with graded refractive index profile.
结果表明用传递函数方法处理折射率渐变分布的光波导问题，计算相对简单，可以得到精确的数值结果。
This paper presents a numerical model of atmospheric optical refractive index structure parameter.
提出了一种大气光学折射率结构常数的数值模式。
It shows that the active channel with sizeable optical gain and a substantial increase of the refractive index are promising for the realization of active waveguide tunable laser.
研究表明，室温下有源沟道具有较大的光增益和折射率增量，有望实现可见波段的可调谐有源光波导激光器件。
Two methods of measurement of the refractive index profile in optical fibers: interference microscope method and near field method are evaluated.
对两种测量光纤折射半剖面的方法：干涉显微镜法和近区场法，进行了评价。
Based on the theories of thermo-optical effect and elastic-optical effect, the refractive index field of the dome was numerically computed with the result of the finite element analysis.
利用有限元分析结果，根据热光效应和弹光效应理论，对气动热环境下红外光学头罩的折射率场进行数值计算。
The mechanism of Z - scan technique is introduced. It 's application to measuring nonlinear refractive index and nonlinear absorption coefficient for nonlinear optical medium is made.
介绍了Z-扫描技术的基本原理，以及Z -扫描技术在测量非线性光学介质的非线性折射率、非线性吸收系数等方面的应用。
In this paper, were introduced recent trend of optical lens materials, with high refractive index.
本文主要介绍眼镜镜片用的高折射率树脂的开发动向。
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