通过模拟，给出基模损耗同芯折射率、光波长和包层空气孔直径之间的一般规律。
After the simulation, the relationship of fundamental mode loss with the core index, wavelength and the diameter of cladding air holes is given.
这种光纤的纤芯折射率比包层基质折射率小，所以短波长时基模损耗迅速增大，使得光传输截止。
The index of the core is a little smaller than that of the cladding base material, so the fundamental mode loss of short wavelength increases rapidly and leads to the mode cutoff.
锁模不仅可用损耗调制取得，也可用位相调制来得到。
Mode locking can be induced not only by loss modulation, but also by phase modulation.
本机可视鞋面翘度简易更换刀模，使鞋面翘度与楦头翘度一致，减少损耗。
This machine can change the wiper as the upper curve, making them consistently, reduce the lose.
增益材料放置的对称性导致奇数阶纵模的损耗，从而增加了微激光器的调谐范围。
Certain symmetry in the allocation of gain material leads to depletion of odd longitudinal modes that, in turn, increases the tunability range of the microlaser.
通过对不同应用的光纤波导结构的制造、性能测试和分析，指出了波导结构设计与光纤衰减、模场直径、弯曲损耗和波导色散等的关系。
Based on manufacture, performance test and analysis of different optical fiber waveguides, the relationships between waveguide and loss, MFD, bend loss, waveguide dispersion are deduced respectively.
最后，本文又对一种低折射率芯光子晶体光纤基模束缚损耗特性进行了分析。
Lastly, the fundamental mode loss of a special kind of depressed-index core PCF is analyzed.
此外，推导出波导tm、TE模的传输功率、损耗功率、衰减常数、等效阻抗等特征参数的边界元公式。
Furthermore, the formulae of transmitted power, loss power, attenuation constant and equivalent impedance for TM and te modes are deduced.
对EOPCB的耦合接口方案进行了研究，针对直波导与多模光纤的耦合损耗进行了计算研究，为在实验过程中的具体操作提供了理论依据。
Then we will analyze the coupling blue print of EOPCB, and compute the loss of fiber coupling with optical waveguide, it will be useful in experimentation.
分析了圆柱形波导气体激光器中的耦合损耗，给出了最低阶波导模EH11的耦合损耗与反射镜位置、曲率半径的函数关系。
This paper analyses the coupling wastage in columniform wave guide gas laser, and gives the function between the coupling wastage of laser guide modulo EH11 and the position and radius of reflector.
在本文中，首先从电磁理论出发，利用波动光学理论分析平板波导的特性，对多模光纤连接损耗进行了理论分析。
In this thesis, at first we will introduce the electromagnetic theory of optical planar waveguide, analyze the transmission characteristic of different modes and the connection loss of fiber.
介质波导中电磁场为eh_(11)模。讨论了模的耦合损耗。
EH11 mode in for the dielectric waveguide, and the mode coupling loss is discussed.
本机可视鞋面敲度角度简易更换刀模，使鞋面敲度与楦头敲度一致，减少损耗。
Visualization of the machine vamps Alice degree Angle simple replacement knife mould, uppers interpretations of the first degree and the last line was looking to reduce loss.
回波损耗测试是通过向双绞线注入DM(差模信号)然后测试返回的DM信号，然而TCL是测试CM信号。
Except a return Loss measurement is made by injecting a DM signal into the pair and measuring the DM signal returned. Here we are measuring the CM signal returned which is TCL.
介电常数虚部大（绝对值），而且包层模序也大时，损耗较大。
The loss is greater when the imaginary part of the complex dielectric constant is bigger and the mode order is higher.
提出一种新型多模光纤扭转传感器的基本原理和传感结构，推导了扭角传感的理论公式，该传感器的扭角与多模光纤的功率损耗呈线性关系。
The theoretical formulas of torsional Angle sensing are derived and the torsional Angle of this sensor is linear to the power loss of the multi-mode fiber.
过渡波导用于改善入射基模与出射偶对称模之间的场分布匹配，有效地提高了功率耦合效率，降低了分支耦合损耗。
The transitional guide is used to improve the mode field matching between both the waves supported by the incident and output waveguides.
本文将准导模的概念用于等效电流法来求取单模光纤的模耦合损耗。
The concept of quasi-guided mode is applied in equivalent current method to calculate the loss of a single mode fiber caused by mode conversion.
损耗影响激发模的光强和频率，在陀螺中损耗不同将会导致零漂。
This difference affects light intensity and frequency of the modes, and as a result leads to zero drift.
实验测量了多模光纤激光器在不同缠绕半径下的输出性能，并理论计算了各阶模式在不同缠绕半径下的损耗特性。
During the experiment, as the coil radius of multimode fiber changes, output characteristic of the laser has been measured. Meanwhile, the mode loss of different modes is calculated theoretically.
根据耦合模理论，分析了光纤耦合器的分束比、附加损耗等传输特性对FFTS的工作带宽和测量准确性的影响。
According to the coupled-mode theory, the impacts of fiber couplers transmission characteristics such as splitting ratio and additional loss, on the veracity and bandwidth of FFTS are analyzed.
通过分析光纤熔接损耗产生的原因，得出可以调整熔接参数来改善模场失配，实现不同类型光纤的低损耗熔接。
Then the mode distributions at the fiber tips and the corresponding splice loss between the two fibers were calculated, and the fusion power range for low splice loss was thus deduced.
通过如上性能的分析和测试，提出了降低啁啾光纤光栅器件时延波动、相位波动，优化其偏振模色散与偏振相关损耗的方法。
Through these measurement and analyse, bring forward the method to reduce the chirp FBG device's group delay ripple, phase ripple and optimize it's PMD and PDL.
举例讨论了导模模式的增益（或损耗）与结构参数和偏振的关系。
In this paper an improved and generalized formula for calculating the complex modal refractive indeces of guided modes is presented.
本文利用一维自由空间模展开法计算了射频板条CO2激光器中金属板条波导的耦会损耗。
In this paper, a one-dimension free-space-mode expansion method is used for calculating the coupling-loss of a total-metal RF slab CO2 laser.
本文利用一维自由空间模展开法计算了射频板条CO2激光器中金属板条波导的耦会损耗。
In this paper, a one-dimension free-space-mode expansion method is used for calculating the coupling-loss of a total-metal RF slab CO2 laser.
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