阐述了所提出的单缺陷和双缺陷光子晶体光纤在双折射和约束损耗特性的对比研究。
Comparative research on the birefringence and the confinement loss of the proposed PCFs with single defect and double defects is presented.
利用检测单模双折射光纤弯曲传输损耗装置测绘了光纤的弯曲损耗图及光纤弯曲传输模式图。
Using the instrument for the transmission loss of single mode of winding birefringence optical fiber, the spectrogram of loss and the graph of mode density are obtained.
电光系数随温度变化及应力双折射引入的最大退偏损耗分别为2.38%和4.04%。
The largest depolarized loss induced by variation of electro-optic coefficient and stress birefringence is correspondingly 2.38%, 4.04%.
通过计算发现，随着中间电极角度和地电极角度增加，有效折射率、特征阻抗同时减小，导体损耗系数也随之减小。
The calculation results have shown that when the angles of the center electrode and the grounds decrease, the effective index, the characteristic impedance, and the conductor loss all decrease.
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.
目前，已有多种成熟的工艺技术，特别是离子交换技术，可以制备低损耗的渐变型折射率波导。
People have paid more attention to the graded-index optical waveguides formed by ion-exchanged for its easy fabrication and low transmission loss.
应用于空气折射率梯度对激光准直的影响和不均匀泵浦引起的激光器附加衍射损耗。
As their applications we have studied the effect of air index gradient on laser alignment and the additional diffraction loss of laser caused by inhomogeneous pump.
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.
采用高斯近似和局域模式耦合理论，对阶跃折射率分布和抛物线折射率分布椭圆芯单模光纤熔接接头损耗进行了分析、计算和讨论。
By the gaussian approximation and local mode-coupled theory, fused splice loss of step and parabolic index single mode elliptic core fibers have been analyzed, calculated and discussed.
本文以制备质量好、传输损耗低的梯度折射率塑料光纤为目的。
The purpose of this paper is to fabricate high quality and low-loss graded-index polymer optical fibers.
利用光线理论研究光纤弯曲损耗与弯曲半径、纤芯折射中以及包层折射率的关系。
By the theory of ray optics, the bend losses of fiber as function of fiber parameters such as core index, cladding index, core radius and bend radius are set up.
在系统中干涉脉冲遵循确切相同的路径，确保非常高的稳定性和自我补偿，使用法拉第镜自动补偿光纤中的任何双折射效应和偏振相关损耗。
The interfering pulses follow exactly the same spatial path, ensuring very high stability and self-compensating. The use of Faraday mirrors compensates for automatically any birefringence effects...
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.
数值模拟显示：电光系数随温度变化和应力双折射是引起开关退偏损耗的主要因素。
The simulated results indicate: variation of electro-optic coefficient as well as stress birefringence is the main factor, which induces depolarized loss of the switch.
同时，研究结果表明，这种新型包层折射率调制的光纤光栅可以为解决纤芯高光敏光纤光栅的高损耗问题提供一个较好的解决方案。
Meanwhile, the research results show that the new grating can be a solution to the high attenuation problem of the gratings with the high photosensitive fiber core.
同时，研究结果表明，这种新型包层折射率调制的光纤光栅可以为解决纤芯高光敏光纤光栅的高损耗问题提供一个较好的解决方案。
Meanwhile, the research results show that the new grating can be a solution to the high attenuation problem of the gratings with the high photosensitive fiber core.
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