fiber endˈfaibəend短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 纤维端 The alignment of laser beam to fiber end face and degradation of beam quality can increase the coupling losses. This paper analyzes their effects to the coupling efficiency. 激光与光纤的机械对准误差和光束质量下降导致了耦合损失，本文分析了它们对耦合效率的影响。 cnki