Bending loss measurement using a fiber cavity ringdown scheme
Bending loss measurement using a fiber cavity ringdown scheme
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DOI：
10.1016/j.optlaseng.2004.03.012
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发表时间：
2005-03
影响因子：
4.6
通讯作者：
D. E. Vogler;Ana Lorencak;J. Rey;M. Sigrist
中科院分区：
文献类型：
--
作者：
D. E. Vogler;Ana Lorencak;J. Rey;M. Sigrist
提出了一种新的光纤腔损耗测量方法。该方法是基于在硅基单模光纤中实现的腔衰荡方案。测量了不同长度的光纤腔的弯曲损耗，结果表明，与理论模型所预测的一样，光纤腔的弯曲损耗随光纤曲率半径的变化呈现振荡特性。在10米长的腔中，这种新方法实现的每腔通过的最小可检测吸收率为1.72×10−3dB。即使在弯曲不敏感的光纤中，这个极限也足以精确地确定光学弯曲损耗。此外，测量的弯曲损耗与理论模型的比较允许提取不同的光纤参数。实验得出的参数和文献数据之间有很好的一致性。
A novel sensitive technique for the determination of losses in fiber cavities is presented. The method is based on the cavity ringdown scheme implemented in silica-based single-mode fibers. Bending losses of fiber cavities of different lengths have been measured showing all an oscillating behavior with respect to the curvature radius of the fiber as predicted by a theoretical model. The best minimum detectable absorbance per cavity pass achieved by this new method is 1.72×10−3dB within a 10m-long cavity. This limit suffices well for an accurate determination of optical bending losses even in bend-insensitive fibers. Furthermore, the comparison of the measured bending losses with a theoretical model allows the extraction of different fiber parameters. Good agreement has been found between the experimentally derived parameters and literature data.