Open AccessDynamics of relaxation oscillation caused by stimulated Brillouin scattering in optical fiber and its suppression
Author(s) -
Jungang Yin,
Xiaosheng Xiao,
Yang Chang-Xi
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.8316
Subject(s) - brillouin scattering , oscillation (cell signaling) , relaxation (psychology) , optics , amplitude , materials science , optical fiber , pulse (music) , scattering , physics , brillouin zone , mechanics , chemistry , psychology , social psychology , biochemistry , detector
In order to further study the dynamics of relaxation oscillation during stimulated Brillouin scattering SBS and to avoid optical damage caused by SBS under high power lasers in applications such as fiber amplifier and fiber phase conjugate mirroretc.the dynamics of relaxation oscillation during SBS in fibers are studied on the basis of the SBS coupled amplitude equations using numerical simulations of finite difference methods. Meanwhilewe propose a method to suppress the relaxation oscillation. For different rise time of SBS pump pulsethe temporal and spatial variation of intensities of pump and Stokes waves is plotted as three-dimensional figures. The corresponding experiments have been conducted and the experimental results agree well with the theoretical results. From the experiments and numerical calculations it can be concluded thatby increasing the rise time of SBS pump pulse the relaxation oscillation can be suppressed effectively and the optical damage caused by SBS can be avoided consequently.