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Study on forward stimulated Brillouin scattering in a backward pumped fiber Raman amplifier

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Abstract

Strong multi-order forward stimulated Brillouin scattering (SBS) has been observed in the backward pumped S-band distributed fiber Raman amplifier (FRA) with tunable narrow signal source (less than 100 MHz) when the pump power of FRA reached the SBS threshold. This does not obey the theory that only weak backward SBS lines exist according to the conservation of energy and momentum and the wave vector selected rule. This is because the sound waveguide characteristic weakens the wave vector rule, and the forward transmitted sound waveguide Brillouin scattering lines are generated and amplified in FRA. When the pump power is further increased, 11 orders of SBS lines and comb-like profile are observed. For the excited line, the frequency is 197.2296 THz and the power is 0 dBm. The even order SBS lines are stronger than odd order SBS lines, the power of the 2nd and 4th order SBS lines is 1.75 dBm, which is 16 dB higher than that of the 1st and 3rd order SBS lines. The odd order SBS lines are named Brillouin-Rayleigh scattering lines.

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所属栏目:Fiber optics and optical communications

收稿日期:2004-06-11

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Zaixuan Zhang:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Laixiao Li:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018College of Optics and Electronics, University of Shanghai for Science and Technology, Shanghai 200093
Dan Geng:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018College of Optics and Electronics, University of Shanghai for Science and Technology, Shanghai 200093
Bizhi Dai:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Yongxing Jin:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Honglin Liu:College of Optics and Electronics, University of Shanghai for Science and Technology, Shanghai 200093
Insoo S. Kim:Information &
Jianfeng Wang:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Xiaobiao Wu:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Dawei Fang:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
Songlin Zhuang:Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018College of Optics and Electronics, University of Shanghai for Science and Technology, Shanghai 200093

联系人作者:Zaixuan Zhang(zhangzx@mail.hz.zj.cn)

备注:The work was supported by the Great Scientific Research Project of Zhejiang Province, P. R. China under Grant No. 021101558. Z. Zhang's e-mail address is zhangzx@mail.hz.zj.cn

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