Evolution of modes in double-clad Raman fiber amplifier

作     者：王文亮 黄良金 冷进勇 郭少锋 姜宗福 Wang Wen-Liang;Huang Liang-Jin;Leng Jin-Yong;Guo Shao-Feng;Jiang Zong-Fu;College of Optoelectric Science and Engineering,National University of Defense Technology

作者机构：College of Optoelectric Science and EngineeringNational University of Defense Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2014年第23卷第2期

页      面：307-311页

核心收录：

学科分类：080901[工学-物理电子学] 080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：fiber nonlinear optics high power Raman fiber amplifier fiber mode 

摘      要：Stimulated Raman scattering in a double cladding optical fiber is studied with a continuous wave laser used as a pump source. Under various launch conditions, pump modes are differently excited. Considering the mode coupling effect among the pump modes, the evolution of the power in the Stokes modes is studied. The results show that the scattered waves （the Stokes waves） in the fiber core with 9%tm diameter and 0.14 NA could propagate predominantly in the fundamental mode of the fiber by carefully adjusting the pump light launching conditions.