他那张纯粹爱尔兰型的脸，同他已离别多年的故乡的那些脸一模一样，是圆圆的、深色的、短鼻子，宽嘴巴，满脸好战的神情。
His was as Irish a face as could be found in the length and breadth of the homeland he had left so long ago-round, high colored, short nosed, wide mouthed and belligerent.
本文主要讨论大功率宽发射域半导体激光器的多模光纤微透镜耦合。
The main topic in the thesis is the coupling the coupling between the high power single emitter broad area diode laser and micro lensed multimode fiber.
考虑了光源初始啁啾的作用 ，推导出均方根脉宽的解析表达式 ，分析表明 ：二阶偏振模色散对脉冲展宽的作用与群速度色散及啁啾有关 ，一阶偏振模色散的作用则与这两者无关。
Taken into account both second order dispersion and SPM in the abnormal-dispersion region of single-mode fibers, we obtained the expression of chirp induced by GVD and SPM.
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