Journal of Zhejiang University SCIENCE
(ISSN 1009-3095, Monthly)

2003   Vol. 4   No. 3   p.254-257


Analysis of stimulated Brillouin scattering in multi-mode fiber by numerical solution

ZHOU Tao(ÖÜÌÎ)(The State Key Lab of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China)
CHEN Jun(³Â¾ü)(The State Key Lab of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China)

Abstract:Stimulated Brillouin scattering in optical fibers is described by a theoretical model and numerical analysis. The results showed that, for an optical fiber pumped by a laser beam with ns-order-pulse width and kW-order peak-power, SBS reflectivity tends to saturate when the fiber length exceeds a limit, named "effective fiber length". Using small core-diameter and long enough fiber, the SBS reflectivity level could be raised but is limited by optical damage of the entrance surface of the fiber. Therefore, just a small dynamic range can be obtained.
Keywords:Optical fiber, Phase conjugation, Stimulated Brillouin scattering

CLC Number:O437.2 Document ID:A

Foundation Item:Project supported by the Bundesminesterium f¨¹r Bildung und Forschung ( BMBF ), the key Foundation of Education Ministry of China and National Natural Science Foundation of China (NSFC No. 69578017).
Author Resume:CHEN Jun,E-mail: Chenjun1@zju.edu.cn

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Manuscript Received:2002 Dec. 21

Manuscript Revised:2003 Mar. 31

Published:2003 June 1