Viscosity of silica core optical fiber
Viscosity of silica core optical fiber
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DOI：
10.1016/s0022-3093(99)00019-8
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发表时间：
1999-03
影响因子：
3.5
通讯作者：
S. Sakaguchi;S. Todoroki
中科院分区：
文献类型：
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作者：
S. Sakaguchi;S. Todoroki
由于我们发现热处理可以减小硅芯光纤的瑞利散射，所以我们研究了光纤的粘度，从粘性弛豫的角度来研究这一现象。为此，在1050-1200℃温度范围内，用弯曲法测量了石英芯光纤的粘度，发现其粘度比石英玻璃的粘度低几个数量级。这一结果是由于与石英玻璃相比，拉伸过程中纤维的虚化温度更大。我们认为瑞利散射的驰豫过程与光纤的拉伸条件有关。
Since we found that Rayleigh scattering of silica core optical fiber can be reduced by heat treatment, we studied the viscosities of the fiber to investigate this phenomenon from the viewpoint of viscous relaxation. To this end, the viscosity of silica core fiber was measured by the bending method in a temperature range of 1050–1200°C. We found that the viscosities were a few orders of magnitude less than those of silica glasses. This result is due to the larger fictive temperature of the fiber, which results from the drawing process, compared with those of silica glasses. We suggest that the relaxation process for Rayleigh scattering is related to the drawing conditions of the fiber.