Precise diameter control is critical for many optical micro/nanofiber (MNF) applications. We demonstrate real-time MNF diameter control with improved accuracy and precision. Different from earlier works, a white light source is applied to monitor the transmittance during fiber pulling process. Terminated directly by the transmission intensity drops that indicate the cutoff of TE01 mode at particular wavelengths, we achieve diameter control accuracy and precision as high as 2nm and 3nm, respectively. The diameter control range from 360 nm to 680 nm that is demonstrated in our experiment can be extended to several tens of micron by exciting other high order modes.

中文翻译：

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使用直接模式截止反馈对纳米纤维进行超高精度直径控制


精确的直径控制对于许多光学微/纳米光纤 (MNF) 应用至关重要。我们展示了实时 MNF 直径控制，其准确性和精确度得到了提高。与早期的工作不同的是，采用白光源来监测光纤拉制过程中的透射率。直接通过传输强度下降来终止，该下降表明特定波长下 TE01 模式的截止，我们实现了分别高达 2nm 和 3nm 的直径控制精度和精确度。我们的实验证明了从 360 nm 到 680 nm 的直径控制范围可以通过激发其他高阶模式扩展到几十微米。