Chinese Optics Letters, 2013, 11 (s2): S20603, Published Online: Jul. 22, 2013
Research on ef fects of active fiber length and dopant concentration on 976-nm Yb-doped fiber amplifiers 
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060.2320 Fiber optics amplifiers and oscillators 140.3615 Lasers, ytterbium 140.4480 Optical amplifiers 060.2280 Fiber design and fabrication
Abstract
In this letter, the theoretical model and rate equations of Ytterbium-doped double-clad fiber amplifiers are introduced. The output performance of fiber amplifiers is analyzed through numerical simulations considering three main factors: active fiber length, pump power, and dopant concentration. It is found that the output signal power experiences a stable growth and then decreases rapidly as the active fiber length becomes longer. It is also revealed that the dopant concentration shows similar effects as active fiber length on the output signal power of fiber amplifiers.
Ruixing Wang, Jianqiu Cao, Ying Liu, Shaofeng Guo, Jinbao Chen. Research on ef fects of active fiber length and dopant concentration on 976-nm Yb-doped fiber amplifiers[J]. Chinese Optics Letters, 2013, 11(s2): S20603.
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