Theoretical discussion on gain characteristics of gain-guided and index antiguided fiber amplifiers

WANG Xiang-ru; XIONG Cai-dong; DENG Hao; LUO Juan-yan; QIU Qi; LIAO Yun

doi:10.3969/j.issn.1001-3806.2009.05.017

With the purpose of further discussion on the property of amplification of gain-guided and index-antiguided Yb-doped fiber amplifiers,with a negative refractive index step from the cladding to the core,the gain characteristics of a Yb3+-doped fiber in a diameter of 100μm were obtained after solving propagation rate equations by means of signal saturation S method.The relationship between the signal gain and the fiber length was obtained under a certain condition of doping concentration and pumping power and the curve was drawn.Comparing with a common fiber amplifier,the amplification property of this gain-guided and index-antiguided fiber was highly improved.

Theoretical discussion on gain characteristics of gain-guided and index antiguided fiber amplifiers

Corresponding author: XIONG Cai-dong, cdxiong@uestc.edu.cn;

1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;

2. School ofOptoelctronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China

Received Date: 2008-11-08

Accepted Date: 2008-12-10

Available Online: 2009-10-25

Abstract: With the purpose of further discussion on the property of amplification of gain-guided and index-antiguided Yb-doped fiber amplifiers,with a negative refractive index step from the cladding to the core,the gain characteristics of a Yb3+-doped fiber in a diameter of 100μm were obtained after solving propagation rate equations by means of signal saturation S method.The relationship between the signal gain and the fiber length was obtained under a certain condition of doping concentration and pumping power and the curve was drawn.Comparing with a common fiber amplifier,the amplification property of this gain-guided and index-antiguided fiber was highly improved.

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Reference (16)

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Theoretical discussion on gain characteristics of gain-guided and index antiguided fiber amplifiers

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