Experimental study Er3+-doped fiber laser based on the nonlinear optical loop mirror

CAO Ling; YANG Ling-zhen; GUO Xiong-ying; ZHOU Xi-jian

To study the generation of ultrashort pulse in Er3+-doped fiber laser,the fiber laser was composed of a gain-flattened erbium doped fiber amplifier(EDFA),two polarization controllers(PCs) and three couplers.A nonlinear optical loop mirror was used for mode-locking.By adjusting the position of PCs,the pulse at 1561nm at a repetition rate 1.1MHz was obtained.The maximum output power of the pulse was 0.6mW with 434ps pulse width and 9nm spectrum width.After amplified by EDFA,the maximum power of the output pulse is 10.8mW and the center wavelength did not change,the spectrum width became slightly narrow,the output power increases greatly and the pulse width of the amplified pulse was 495ps.The experimental results show that:the ultrashort pulse could be generated by the Er3+-doped fiber laser using a commercial EDFA.The self-starting of the mode-locked fiber laser can be achieved easily and the mode-locked operation can be hardly influenced by the experimental environment.

Corresponding author: YANG Ling-zhen, office-sciencw@tyut.edu.cn;

1. Department of Physics, College of Sciences, Taiyuan University of Technology, Taiyuan 030024, China

Received Date: 2006-08-24

Accepted Date: 2006-09-13

Available Online: 2007-12-25

Abstract: To study the generation of ultrashort pulse in Er3+-doped fiber laser,the fiber laser was composed of a gain-flattened erbium doped fiber amplifier(EDFA),two polarization controllers(PCs) and three couplers.A nonlinear optical loop mirror was used for mode-locking.By adjusting the position of PCs,the pulse at 1561nm at a repetition rate 1.1MHz was obtained.The maximum output power of the pulse was 0.6mW with 434ps pulse width and 9nm spectrum width.After amplified by EDFA,the maximum power of the output pulse is 10.8mW and the center wavelength did not change,the spectrum width became slightly narrow,the output power increases greatly and the pulse width of the amplified pulse was 495ps.The experimental results show that:the ultrashort pulse could be generated by the Er3+-doped fiber laser using a commercial EDFA.The self-starting of the mode-locked fiber laser can be achieved easily and the mode-locked operation can be hardly influenced by the experimental environment.

HTML

Reference (9)

[1]	DENNIS M L,DULING I N.Role of dispersion in limiting pulse width in fiber lasers[J].A P L,1993,62(23):2911～2912.
[2]	AVDOKHIN A V,POPOV S V,TAYLOR J R.Totally fiber integrated figure-of-eight femtosecond source at 1065nm[J].Optics Express,2003,11(3):265～269.
[3]	RICHARDSON D J,LAMING R I,PAYNE D N et al.320fs soliton generation with passively mode-locked erbium fibre laser[J].Electron Lett,1991,27(9):730～732.
[4]	JEON M Y,LEE H K,AHN J T et al.Wideband wavelength tunable mode-locked fibre laser over 1557nm～1607nm[J].Electron Lett,2000,36(4):300～301.
[5]	ILDAY F O,WISE F W.High-energy femtosecond strectched pulse fiber laser with a nonlinear optical loop mirror[J].Opt Lett,2002,27(17):1531～1533.
[6]	MA H Q,ZHAO W,ZHANG W et al.Wavelength passively mode-locked fiber laser[J].Laser Technology,2006,30(3):289～291(in Chinese).
[7]	DORAN N J,WOOD D.Nonlinear-optical loop mirror[J].Opt Lett,1988,13(1):56～58.
[8]	WANG Zh Y,YU Zh H,GAO P L et al.Figure-eight shape actively and passively mode-locked erbium-doped fiber laser[J].Acta Optica Sinica,2003,23(11):1341～1345(in Chinese).
[9]	HE H R,YUAN X H.Analysis of t he characteristics of the all-optical switch based on nonlinear amplifying loop mirror[J].Chinese Journal of Lasers,2005,32(3):418～422(in Chinese).

Experimental study Er3+-doped fiber laser based on the nonlinear optical loop mirror

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views