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.
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Project supported by the Bundesminesterium für Bildung und Forschung (BMBF), the key Foundation of Education Ministry of China and National Natural Science Foundation of China (NSFC No. 69578017).
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Zhou, T., Chen, J. Analysis of stimulated Brillouin scattering in multi-mode fiber by numerical solution. J. Zhejiang Univ. Sci. A 4, 254–257 (2003). https://doi.org/10.1631/jzus.2003.0254
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DOI: https://doi.org/10.1631/jzus.2003.0254