An experimental set-up was constructed based on an ytterbium pulsed laser with a passive holmium fiber shutter, which provides time-domain reflectometry research the length of active fiber samples after drawing and during storage. The possibility of studying non-uniformities in the fiber and quantifying the attenuation coefficient of the optical signal at the source wavelength is discussed. The results indicate the possibility of conducting studies of this type, as well as the potential development of reflectometers for the needs of laboratories of enterprises that produce active optical fibers commercially.

中文翻译：

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全光纤时域反射仪，用于测量有源掺Do光纤的长度

基于with脉冲激光和无源纤维百叶窗构建了一个实验装置，该装置提供了时域反射测量法，可研究拉伸后和储存过程中活性纤维样品的长度。讨论了研究光纤中的不均匀性并量化光信号在光源波长处的衰减系数的可能性。结果表明进行此类研究的可能性，以及反射计的潜在发展，以满足商业生产活性光纤的企业实验室的需求。