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Precise control of the optical microfiber tapering process based on monitoring of intermodal interference

机译：基于对联运干扰的监测，精确控制光微纤维的锥度过程

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This paper describes the effective rectification of the estimated diameter of an optical microfiber (OM) during the tapering process. A high-coherence laser is used to monitor the OM-tapering process. The evolution of the intermodal interference between the fundamental mode and the coupled modes can be clearly observed. We analyze the point in time at which the excited mode vanishes and use that to justify the correlative diameter of the fabricated OM for the first time, to the best of our knowledge. By comparing the measured cutoff time of the coupled LP02 mode and the theoretically predicted value, we can judge whether the theoretical estimation of the OM diameter has been correctly obtained, and we can introduce a modification method with feedback by changing the initial parameters or the manufacturing conditions to ensure OM diameter accuracy. This identification and rectification method is helpful for precise fabrication of OMs with different waist lengths and waist diameters, and it can also be used to check the repeatability of OMs. (C) 2014 Optical Society of America
机译：本文介绍了在锥化过程中有效估计光学微纤维（OM）直径的方法。高相干激光器用于监视OM锥形过程。可以清楚地观察到基本模式和耦合模式之间的联运干扰的演变。我们分析了激发模式消失的时间点，并据我们所知首次使用了该点来证明制造的OM的相关直径是合理的。通过比较耦合的LP02模式的实测截止时间和理论预测值，我们可以判断是否正确获得了OM直径的理论估计，并且可以通过更改初始参数或通过制造来引入带反馈的修正方法。确保OM直径精度的条件。这种识别和纠正方法有助于精确制造具有不同腰围长度和腰围直径的OM，并且还可以用于检查OM的可重复性。 （C）2014年美国眼镜学会

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