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1)  Atypical birefringence patterns
不典型双折射模式
2)  mode birefringence
模式双折射
1.
In order to adopt photonic crystal fibers broadly in the passive devices such as fiber press sensors,the stress of photonic crystal fiber cores and cladding,the transversal structure and the refractive index were theoretically analyzed and simulated by means of elastic-optical theory,and the effect of pressure on the pulse phase and mode birefringence in photonic crystal fibers were discussed.
为了能使光子晶体光纤用于光纤压力传感器等无源器件中,采用弹光理论分析方法对压力作用下光子晶体光纤纤芯和包层中应力、横向结构和折射率分布的变化进行了理论分析和实验模拟,获得了压力作用下对光子晶体光纤中传播光脉冲的相位和模式双折射的影响的数据,采用相干干涉测量技术方法能测量光子晶体光纤中光脉冲相位和模式双折射的波动量值并进一步推算出作用在光子晶体光纤上的外界压力变化量。
2.
The fluctuation of the pulse phase and mode birefringence in the photonic crystal fibers is also discussed.
利用Edlen公式分析了温度场对实芯光子晶体光纤的空气孔折射率的影响并应用热传导模型对光子晶体光纤石英介质在温度场作用下产生的热应力及折射率分布变化进行了分析,讨论了温度场变化导致光子晶体光纤中光脉冲相位和模式双折射的波动影响。
3)  modal birefringence
模式双折射
1.
The influences of the structures of elliptical core Photonic Crystal Fibers with elliptical pores on the modal birefringence are investigated by using the full-vectorial finite elements method.
采用全矢量有限元法分析了椭圆孔椭圆芯光子晶体光纤的结构对模式双折射的影响。
2.
In the general, the higher the modal birefringence of fiber is,the better the polarization state maintaining of fiber becomes.
偏振保持光纤是单模光纤的一种特殊类型 ,其模式双折射与温度、芯和皮折射率差及椭圆度、热膨胀系数、光纤直径、弹性模量、泊松比、频率、波长、拉丝张力等诸多因素有关 ,对与偏振保持光纤模式双折射相关的上述因素进行分析 ,指出光纤模式双折射越高 ,光纤的偏振态保持就越好 ,为更好地设计新型保偏光纤或合理选择保偏光纤类型奠定了基础。
3.
We use the Apollophotonics Software APSS to calculate the variation of the modal birefringence B, PMD, and dispersion (GVD) of the HB-PCF with the wavelength λ, and experimentally obtain the group birefringence of that HB-PCF by measuring the transmission spectrum of the Sagnac interferometer comprised of that HB-PCF loo.
通过非线性曲线拟合获得相关参数,进一步得到该光纤的模式双折射及拍波长。
4)  electrically controlled birefringence mode
电控双折射模式
5)  group modal birefringence
模双折射
1.
In the wavelength range 600~1700 nm,the results indicate that the variation of the phase and group modal birefringence is different,when the lateral pressure is applied along the slow axis and fast axis of the microstructure fiber,respectively.
研究结果表明,在波长600~1700 nm范围内,沿微结构光纤慢轴和快轴的侧向压力所引起的光纤相双折射和模双折射的变化并不一致。
6)  refraction mode
折射模型
1.
Based on the idea of minimum variance,a new modified tropospheric refraction mode with better performance is proposed after studying on the basic theories and methods of several classical tropospheric refraction modes.
文中详细阐述了该对流层大气折射修正模型的建立过程,给出了基于此折射模型的修正的雷达目标求高公式。
补充资料:双轴双折射
分子式:
CAS号:

性质:由双轴取向引起的双折射。由于不存在单轴取向时的旋转对称轴,因此需要在两个相互垂直的方向上测量双折射值才能给出全面的表征。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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