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Experimental Demonstration of a Compact Variable Single-Mode Fiber Coupler Based on Microfiber
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2021-06-11 , DOI: 10.1109/lpt.2021.3088454 Luqing Shao , Yingxin Xu , Hao Wu , Wei Fang , Limin Tong
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2021-06-11 , DOI: 10.1109/lpt.2021.3088454 Luqing Shao , Yingxin Xu , Hao Wu , Wei Fang , Limin Tong
Single-mode fiber coupler with variable coupling ratio is a flexible tool for optical fiber applications. Here we demonstrate a microfiber based coupler with compact size and wide tuning range. The coupler consists of two identical single-mode microfibers that are fabricated via parallel pulling process. By adjusting the twisting angle between these microfibers, the coupling ratio varies from 3.15% to 98.5% due to the change of evanescent field interaction length. Numerical simulations are carried out and the results agree well with the experimental ones. The effects of diameter discrepancy between two microfibers and mode polarization are also studied experimentally and numerically.
中文翻译:
基于超细纤维的紧凑型可变单模光纤耦合器的实验演示
可变耦合比的单模光纤耦合器是一种灵活的光纤应用工具。在这里,我们展示了一种具有紧凑尺寸和宽调谐范围的基于微纤维的耦合器。耦合器由两根相同的单模微纤维组成,通过平行拉制工艺制造。通过调整这些微纤维之间的扭曲角度,耦合比因倏逝场相互作用长度的变化而从 3.15% 变化到 98.5%。进行了数值模拟,结果与实验结果吻合良好。还通过实验和数值研究了两个微纤维之间的直径差异和模式偏振的影响。
更新日期:2021-06-22
中文翻译:
基于超细纤维的紧凑型可变单模光纤耦合器的实验演示
可变耦合比的单模光纤耦合器是一种灵活的光纤应用工具。在这里,我们展示了一种具有紧凑尺寸和宽调谐范围的基于微纤维的耦合器。耦合器由两根相同的单模微纤维组成,通过平行拉制工艺制造。通过调整这些微纤维之间的扭曲角度,耦合比因倏逝场相互作用长度的变化而从 3.15% 变化到 98.5%。进行了数值模拟,结果与实验结果吻合良好。还通过实验和数值研究了两个微纤维之间的直径差异和模式偏振的影响。