Analysis of pulse amplification of ytterbium-doped fiber amplifiers by means of finite elements

XU Yun-feng; ZHAN Yi; ZHENG Yi

The main purpose of this paper is to present the simple and fast method for simulating the characteristics of pulse amplification in ytterbium-doped double-clad fiber amplifiers with finite elements model FEMLAB package.The upper-level population distribution in the fiber,the pump power and the amplified spontaneous emission with 915nm forward pumping were studied by using the same parameters with the finite elements model fast Fourier transform.The transient output power,stored energy and gain of Gaussian pulse and square pulse were simulated.These results are in good agreement with those obtained according to fast Fourier transform.Furthermore,these results are more exact.The results show this method is convenient and fast.This method will offer valuable reference in design and parameter optimization of ytterbium-doped fiber amplifiers.

Corresponding author: ZHENG Yi, yzheng@zzu.edu.cn

1. Henan Key Laboratory of Laser and Opto-electric Information Technology, Zhengzhou University, Zhengzhou 450052, China

Received Date: 2007-02-01

Accepted Date: 2007-03-23

Available Online: 2008-04-25

Abstract: The main purpose of this paper is to present the simple and fast method for simulating the characteristics of pulse amplification in ytterbium-doped double-clad fiber amplifiers with finite elements model FEMLAB package.The upper-level population distribution in the fiber,the pump power and the amplified spontaneous emission with 915nm forward pumping were studied by using the same parameters with the finite elements model fast Fourier transform.The transient output power,stored energy and gain of Gaussian pulse and square pulse were simulated.These results are in good agreement with those obtained according to fast Fourier transform.Furthermore,these results are more exact.The results show this method is convenient and fast.This method will offer valuable reference in design and parameter optimization of ytterbium-doped fiber amplifiers.

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Reference (10)

[1]	WANG Y,PO H.Dynamic characteristics of double-clad fiber amplifiers for high-power pulse amplification[J].IEEE Journal of Lightwave Technology,2003,21(10):2262-2270.
[2]	HARDY A,ORON R.Signal amplification in strongly pumped fiberamplifiers[J].IEEE J Q E,1997,33(3):307-313.
[3]	VALLEY G C,WRIGHT M.Modeling transient gain dynamics in acladding-pumped Yb3+-doped fiber amplifier pulsed at low repetition rates[C]//CLARKSON A.CLEO 2001 Papaer CWA51.Baltimore,United States:Conference on Lasers Electro-Optics,2001:300-301.
[4]	LU X Q,CHEN Sh H.Ytterbium-doped fiber amplifiers[J].Chinese Journal of Lasers,2001,28(3):209-214(in Chinese).
[5]	PASCHOTAL R,NILSSON A C J.Ytterbium-doped fiber amplifiers[J].IEEE J Q E,1997,33(7):1049-1056.
[6]	KONG L F,LOU Q H,ZHOU J,et al.Frequency response and transient gain of Yb-doped clad fiber amplifier[J].Acta Photonica Sinica,2004,33(11):1286-1289(in Chinese).
[7]	HANNA D C,PERCIVAL R M,PERRY I R,et al.An ytterbium-doped monomode fiber laser:brodly tunable operation from 1.010μm to 1.162μm and three-level operation at 974nm[J].Journal of Modern Optics,1990,37(4):517-525.
[8]	BRUNET F,TAILLON Y,GALARNEAU P,et al.Practical design of double-clad ytterbium-doped fiber amplifiers using giles parameters[J].IEEE J Q E,2004,40(9):1294-1300.
[9]	WRIGHT M W,VALLEY G C.Yb-doped fiber amplifier for deep-space communications[J].IEEE Journal of Lightwave Technology,2005,23(3):1369-1374.
[10]	ZHAN Y,ZHENG Y,ZHAO Y H,et al.The gain and noise characteristics of double cladding ytterbium-doped fiber amplifiers at different pump modes[J].Laser Technology,2007,31(1):50-53(in Chinese).

Analysis of pulse amplification of ytterbium-doped fiber amplifiers by means of finite elements

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