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Suppression of stimulated Raman scattering employing long period gratings in double-clad fiber amplifiers

机译:使用双包层光纤放大器中的长周期光栅抑制受激拉曼散射

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摘要

We report on the suppression of stimulated Raman scattering (SRS) in a double-clad fiber amplifier using long-period gratings (LPGs). The LPGs, fabricated with a CO_(2) laser, achieve SRS suppression by coupling the Stokes wavelength from the active core into the cladding. With only three LPGs inserted into a fiber pulse amplifier, the extractable Raman-free output power was nearly doubled. A numerical simulation of the setup shows good agreement with the experimental results.
机译:我们报告了使用长周期光栅(LPG)在双包层光纤放大器中抑制受激拉曼散射(SRS)。用CO_(2)激光器制造的LPG通过将斯托克斯波长从有源纤芯耦合到包层来实现SRS抑制。仅将三个LPG插入光纤脉冲放大器中,可提取的无拉曼输出功率几乎增加了一倍。装置的数值模拟表明与实验结果吻合良好。

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