Chinese Optics Letters, 2004, 2 (11): 11627, Published Online: Jun. 6, 2006  

Study on forward stimulated Brillouin scattering in a backward pumped fiber Raman amplifier Download: 1023次

Author Affiliations
1 Optelectronics Technology Institute, China Jiliang University, Hangzhou 310018
2 College of Optics and Electronics, University of Shanghai for Science and Technology, Shanghai 200093
3 Information &
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.

Zaixuan Zhang, Laixiao Li, Dan Geng, Bizhi Dai, Yongxing Jin, Honglin Liu, Insoo S. Kim, Jianfeng Wang, Xiaobiao Wu, Dawei Fang, Songlin Zhuang. Study on forward stimulated Brillouin scattering in a backward pumped fiber Raman amplifier[J]. Chinese Optics Letters, 2004, 2(11): 11627.

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