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Cascaded gain fibers for increasing output power and the stimulated Brillouin scattering threshold of narrow linewidth fiber Raman amplifiers

机译:级联增益光纤,用于增加输出功率和窄线宽光纤拉曼放大器的受激布里渊散射阈值

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We show both experimentally and theoretically a method to increase the stimulated Brillouin scattering (SBS) threshold and output power of narrow linewidth fiber Raman amplifiers. This method employs two or more fibers with varying concentrations of the Raman gain material dopant such as GeO2 or P2O5 in silicate-based glasses. These fibers are then cascaded to form an amplifier gain stage, disrupting the buildup of SBS that normally occurs in single continuous fibers. The numerical model shown is applicable to arbitrary amplifier systems for gain stage optimization and increased power scaling. We give experimental results for phosphosilicate fibers that agree well with simulation predictions that support the numerical model used. (C) 2016 Optical Society of America
机译:我们在实验和理论上都展示了一种增加受激布里渊散射(SBS)阈值和窄线宽光纤拉曼放大器输出功率的方法。该方法在硅酸盐基玻璃中使用两种或更多种具有不同浓度的拉曼增益材料掺杂剂(例如GeO2或P2O5)的纤维。然后将这些光纤级联以形成放大器增益级,从而破坏通常在单根连续光纤中发生的SBS堆积。所示的数值模型适用于任意放大器系统,以进行增益级优化和增加功率定标。我们给出的磷硅酸盐纤维的实验结果与支持所用数值模型的模拟预测非常吻合。 (C)2016美国眼镜学会

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