考虑到光纤出射光束的发散，在有效反射率中引入了损耗因子，讨论了它的基本工作原理。
Its principle is discussed, taking the divergent optical beam emitted from the fiber into consideration, which causes a loss factor for the effective reflectance.
通常采用单个透镜，透镜组或者光纤微透镜的方式来改善半导体激光器的出射光束质量，提高耦合效率和容忍度。
The mostly used techniques to improve the coupling efficiency and alignment tolerance include using micro single lens, micro lens group and lensed fiber.
对聚甲基丙烯酸甲酯(PMMA)芯聚合物光纤的临界弯曲半径进行了测试，利用光栅单色仪对采用不同尺寸滤模器的光纤出射光谱进行了测量。
The critical bending radius of PMMA polymer optical fiber is measured, By using grating monochromator, the exiting spectrums of the mode filters with different dimensions are measured.
以面阵CCD为传感器，检测光纤端部出射光斑，采用“重心法”提取光斑的特征点表征光纤的位置。
With planar array CCD sensor, exit spot from optic fiber end is detected through extracting the characteristic points of spot for characterizing the position of optic fiber.
通过分析水平分光光路和保偏光纤特性，找出产生对射光功率波动的原因，并给出一种简单实用的解决方案。
By analyzing the horizontal optical system and the feature of PMF, we found the reason and report a simply but available project for the problem.
介绍了掺铒光纤激光器内腔吸收谱的基本原理，以及激光激射延迟时间与气体浓度的关系。
The principle of intracavity laser absorption and the relationship between gas concentration and the laser build-up time is outlined.
采用“光重心法”对光纤出射光斑信号进行处理，获取光纤端部的位置特征。
The light center of gravity method is applied to processing optic fiber exited spot signal for acquiring the position features of optic fiber ends.
为了更好地设计掺镱光纤激光器，提出了一种用于确定自由运转的掺镱光纤激光器激射波长的计算模型。
A theoretical model was proposed to calculate the lasing wavelength of free running ytterbium-doped fiber lasers.
研究结果可为高功率光纤激光器、出射光斑为特定形状的光纤激光器的设计提供理论依据，对其他类似微结构光纤在激光器领域的应用具有借鉴意义。
The results may provide a basis for high power fiber lasers or for fiber lasers which have particular spot shape and are also helpful for similar microstructure fibers applied in laser areas.
研究结果可为高功率光纤激光器、出射光斑为特定形状的光纤激光器的设计提供理论依据，对其他类似微结构光纤在激光器领域的应用具有借鉴意义。
The results may provide a basis for high power fiber lasers or for fiber lasers which have particular spot shape and are also helpful for similar microstructure fibers applied in laser areas.
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