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基于三重覆盖纤维的反方向/信号组合器及其应用在并排的纤维放大器中

Jian Zhang, Zhixian Li, Min Fu

|August 13, 2025

概括

研究人员开发了一种用于高功率光纤激光器的新型三层覆盖纤维 (TCF) /信号组合器 (PSC). 与双层覆盖纤维PSC相比,这种TCF-PSC显著提高了效率并减少了热量.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学

背景情况:

三重覆盖纤维 (TCF) 在高功率激光系统中具有优势,包括更好的热管理和光吸收.
基于双层覆盖纤维 (DCF) 的/信号组合器 (PSC) 等被动元件可以限制三层覆盖纤维激光器 (TCFL) 中的TCF的性能.

研究的目的:

为了制造和评估一个新的 (6+1) ×1反向PSC,使用与增强纤维匹配的TCF.
为了比较基于TCF的PSC与基于DCF的传统PSC在高功率光纤放大器中的性能.

主要方法:

使用TCF制造一个 (6+1) ×1反向PSC.
将基于TCF的PSC和基于DCF的PSC集成到一个6kW的反向串联送光纤放大器中进行比较测试.
测量合效率,信号传输效率,温度上升,斜率效率和M2因子.

主要成果:

通过基于TCF的PSC实现了99%的合效率和98%的信号传输效率.
基于TCF的PSC导致输出纤维温度上升减少40%,斜坡效率增加3.8% (从79.8%增加到83.6%).
基于TCF的PSC由于光纤兼容性,使M2因子提高了15% (从2.89到2.45).

结论:

开发的基于TCF的PSC在高功率TCFL应用中显著优于基于DCF的PSC.
性能提升归因于高效的灯合和优良的光纤兼容性.
这项工作突显了专用组合器对于推进高功率TCFL技术的重要性.

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