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Chin. Phys. B, 2014, Vol. 23(2): 024210    DOI: 10.1088/1674-1056/23/2/024210

Evolution of modes in double-clad Raman fiber amplifier

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, Changsha 410073, China
Abstract  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-μm diameter and 0.14 NA could propagate predominantly in the fundamental mode of the fiber by carefully adjusting the pump light launching conditions.
Keywords:  fiber nonlinear optics      high power Raman fiber amplifier      fiber mode     
Received:  23 April 2013      Published:  12 December 2013
PACS:  42.55.Ye (Raman lasers)  
  42.55.Wd (Fiber lasers)  
  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
Corresponding Authors:  Leng Jin-Yong     E-mail:
About author:  42.55.Ye; 42.55.Wd; 42.60.Jf

Cite this article: 

Wang Wen-Liang, Huang Liang-Jin, Leng Jin-Yong, Guo Shao-Feng, Jiang Zong-Fu Evolution of modes in double-clad Raman fiber amplifier 2014 Chin. Phys. B 23 024210

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