查询词典 refractive index

The measuring method for refractive index dependence on temperature and for dispersion characteristic of the fluorinated polyimide film is also reported

同时报道了含氟聚酰亚胺薄膜波导的制备工艺及其温度特性和色散特性的测试。

The invention discloses an optical-fiber all-optical code converter, comprising a temperature control circuit as well as optical-fiber Mach-Zed interferometer, heat sink, semiconductor refrigerator, thermosensitive resistor and radiator, where the interferometer is composed of two cascaded 3dB couplers on the heat sink, the relation between length difference delta L of two arms of the interferometer and generated delay time difference delta T is that delta L=c.delta T/n, where c is light velocity in vacuum and n is refractive index of optical fiber; the thermosensitive resistor is used to detect temperature of interferometer, the temperature control circuit is used to compare feedback voltage of the thermosenstive resistor with a given voltage to regulate working current of the semiconductor refrigerator, and the semiconductor refrigerator refrigerates or heat two arms of the interferometer by the heat sink.

本发明公开了一种光纤型全光码型转换器，它包括温控电路和位于密封盒内的光纤型马赫-泽德干涉仪、导热热沉、半导体制冷器、热敏电阻以及散热片；干涉仪由位于导热热沉上的二个3dB耦合器级联而成，两臂的长度差ΔL与产生的延时差ΔT之间的关系为ΔL＝c。ΔT/n，c为真空中光速，n为光纤折射率；热敏电阻用于对干涉仪的温度进行探测，温控电路用于比较热敏电阻反馈的探测电压和设定电压，对半导体制冷器的工作电流进行调节，半导体制冷器通过导热热沉对干涉仪两臂同时进行制冷或加热。

Besides, annealing also smoothes the film surface and enhances the density and refractive index of the films.

退火处理使薄膜的表面粗糙度降低、致密度增加、折射率增大。

This mainly displayed in the temperature change caused the back lining material which constituted hydrophone head expansion or contraction, and changed the optical fiber refractive index.

这主要表现在温度变化引起水听器探头背衬材料的胀缩和光纤折射率的变化。

To match the boundary conditions, the modified Bessel functions are expanded to the planar wave in the interface. Then the eigenvalue equations of different polarizations are obtained by scalar approximation. At last, the relations between propagation losses and the states of polarizations, the geometric structures of the fiber, the refractive index and thickness of the polymer are calculated.

论文首先给出其等效折射率数学模型，在纤芯和包层中，光场用贝塞尔函数及虚宗量贝塞尔函数的求和表示，在聚合物和金属中用指数函数的求和表示，交界面上采用将虚宗量贝塞尔函数用平面波展开的方法匹配边界条件，然后利用标量近似求出极化D型光纤不同偏振态光场模式的本征值方程，最后通过数值计算得到光纤的传输损耗与抛磨平面和纤芯之间的距离，聚合物粘接材料的折射率和厚度，以及偏振态之间的关系。

Cerium dioxide has high refractive index and dielectric constant and ultraviolet absorption which may be useful for various optical and electronic applications.

二氧化铈具有高折射率、介电常数和紫外吸收率，因此它广泛地应用于各种光学和电子器件。

Optical clearing is a technique to increase the light penetration depth in the tissue by the application of clearing agent to reduce light scattering and match the refractive index between the scatterer and the environment.

光透明技术是一种在生物组织中通过施加光透明剂来抑制光散射，改善散射体和环境的折射率匹配，从而增加光在生物组织中的穿透深度的技术。

The numerical results indicate that the collimating performances of two lens changed little as the increasing of the refractive index and this made it possible to choose the material of the lens in more field.Theoretically,the radiation angle of laser diode beams in the quick axis can be compressed under 0.1 mrad.

结果表明：这两种柱透镜的准直效率随折射率的变化不大，这在一定程度上提高了透镜材料选择的灵活性；并且理论上，共轴双半椭圆柱透镜可以将半导体激光光束快轴方向的发散角压缩到0.1 mrad量级。

Aiming at the structure and refractive-index profile of wide-angle cross waveguide, the optical field distribution has been calculated by the method.

数值计算对交叉波导的设计和优化有着重要的意义，而选择正确的计算方法是交叉波导数值计算的关键。

Through research, the relationship among cured depth and concentration of photoinitiator, exposure energy, concentration of monomer, ratio of monomer to cross linker, refractive index of liquid, volume fraction of powders, mean diameter of powders are confirmed.

通过对浆料固化性能的研究，得出了固化厚度随引发剂浓度，曝光能量，单体质量分数，单体和交联剂比例，单体溶液的折射率，粉末体积分数以及粉末粒径的变化关系，并得出相应的最佳值。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。