To raise the stimulated Brillouin scattering (SBS) threshold, we have fabricated an optical fibre having a core heavily doped with germanium oxide and displaced from the fibre axis. A method has been proposed for broadening the SBS gain spectrum of the fibre by winding it onto a small-diameter spool, and a broadening of the spectrum by 5.4 dB has been demonstrated, which indicates an increase in SBS threshold by 4.1 dB.

中文翻译：

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用于抑制 SBS 的带有偏置纤芯的光纤

为了提高受激布里渊散射 (SBS) 阈值，我们制造了一种光纤，其纤芯重掺杂氧化锗并偏离光纤轴。已经提出了一种通过将光纤缠绕在小直径线轴上来加宽光纤的 SBS 增益谱的方法，并且已经证明了频谱加宽了 5.4 dB，这表明 SBS 阈值增加了 4.1 dB。