纤芯直径

本文描述的单模光纤参数测量的远场法具有一次实验便可确定单模光纤归一化频率、纤芯直径和数值孔径这三个主要参数之特点。

The three main parameters , the normalized frequency ( V ), the core diameter ( 2a ) and the numerical aperture ( NA ) of single mode fibers are determined by observation of the far-field pattern .

利用光纤激光器的功率传输方程，理论分析了高功率掺Yb3+双包层光纤激光器中的受激拉曼散射效应，得到了纤芯直径、光纤长度、掺杂浓度以及抽运方式对光纤激光器特性的影响。

According to the power transfer equations , SRS effect in high power Yb ~ ( 3 + ) doped double clad fiber laser is studied . The effect of core diameter , fiber length , doped concentration and pumping method on the characteristic of fiber laser is studied .

提出一种通过布拉格光纤光栅传输谱线计算其纤芯直径和折射率的方法。

The vibration of cantilever is detected by a fiber Bragg grating ( FBG ) glued on the cantilever .

由于双孔光纤的孔径和电极材料的直径比纤芯直径大得多，可以将圆孔和电极等效为平面波导。

Due to the facts that the diameters of the holes and electrodes are much larger than that of the fiber core , they can be regarded as planar waveguides .

分析了基模传输时，熔融石英微纳光纤的电磁场分布、功率分布、群速度色散、模场直径和非线性系数与纤芯直径和传输光波波长之间的关系。

The dependence of electromagnetic fields , power distribution , group velocities dispersion , mode field diameter and nonlinear parameter of air-silica micro / nano-fibers on the core diameter and transmission wavelength is analyzed .

大模场面积双包层掺杂光纤的使用使得高功率光纤激光器的输出功率不断跃升，但随着光纤纤芯直径的增加，获得高光束质量的激光变得越来越困难。

The application of large-mode-area double-clad ( LMA ) rare-earth ion-doped fibers is speeding up the power scaling of high-energy fiber lasers . However , it is not so easy to obtain high beam quality laser output with an increasing size of fiber core diameter .