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首页> 外文期刊>Scientific reports. >A novel high-power all-fiberized flexible spectral filter for high power linearly-polarized Raman fiber laser
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A novel high-power all-fiberized flexible spectral filter for high power linearly-polarized Raman fiber laser

机译：一种用于高功率线性极化拉曼光纤激光器的新型高功率全纤维化柔性频谱滤波器

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摘要

Power scaling of linearly polarized Raman fiber laser (LPRFL), which has wide application potentials, is mainly limited by the generation of high-order Stokes light. In this paper, we propose a novel flexible spectral filter with all-fiberized configuration and high-power handling. Combining with the polarization-dependence of Raman gain, the filter could be used to efficiently suppress high-order Stokes light in LPRFL and thus help further power scaling. The filter is fabricated by two 45° cross-splice of three pieces of polarization maintaining (PM) passive fibers. The bandwidth and central wavelength of transmission spectrum of the spectral filter could be flexibly tuned through changing the length and temperature of the cross-spliced fiber. The insertion loss of the filter fabricated in the lab is measured to be as low as 0.07?dB. The filter is employed in a LPRFL, and the maximum output power of the LPRFL is increased by 48.7%.
机译：线性偏振拉曼光纤激光器（LPRFL）的功率缩放，具有广泛的应用势，主要受到高阶斯托克斯光的产生。在本文中，我们提出了一种具有全纤维配置和高功率处理的新型柔性谱滤波器。结合拉曼增益的偏振依赖性，可以使用过滤器来有效地抑制LPRFL中的高阶激光，因此有助于进一步动力缩放。过滤器由三个偏振维持（PM）无源纤维的三件叉接头制造。通过改变横拼接光纤的长度和温度，可以灵活调谐光谱滤波器的传输光谱的带宽和中心波长。测量实验室中制造的过滤器的插入损耗低至0.07≤DB。过滤器在LPRFL中采用，LPRFL的最大输出功率增加了48.7％。

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