Evolution of modes in double-clad Raman fiber amplifier

doi:10.1088/1674-1056/23/2/024210

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
Revised: 06 September 2013
Accepted manuscript online:

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: lengjy@sina.com

About author: 42.55.Ye; 42.55.Wd; 42.60.Jf

Cite this article:

Wang Wen-Liang (王文亮), Huang Liang-Jin (黄良金), Leng Jin-Yong (冷进勇), Guo Shao-Feng (郭少锋), Jiang Zong-Fu (姜宗福) Evolution of modes in double-clad Raman fiber amplifier 2014 Chin. Phys. B 23 024210

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