Microstructured optical fibre drawing with active channel pressurisation
Microstructured optical fibre drawing with active channel pressurisation
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具有主动通道加压的微结构光纤拉丝
DOI：
10.1017/jfm.2015.570
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发表时间：
2015
影响因子：
3.7
通讯作者：
Chen M
中科院分区：
文献类型：
--
作者：
Chen M
在拉制微结构光纤 (MOF) 时使用通道加压可以实现对光纤内部结构的精细控制。通过在通道内施加额外的压力，可以抵消表面张力的影响，否则表面张力会在纤维被拉伸时封闭纤维中的通道。本文扩展了 Stokes 等人的建模方法。 （J. Fluid Mech.，第 755 卷，2014 年，第 176–203 页）包括通道加压。这种方法将问题视为流动的两个子模型，一个在沿纤维的轴向方向上，另一个在垂直于该方向的平面上。在没有通道加压的情况下，这些模型解耦并独立求解；我们表明，当内部通道受压时，它们会完全耦合。将详细研究具有环形横截面（包含一个中心通道）的光纤的基本情况。在此过程中，我们既考虑了从已知预制件确定光纤形状的正向问题，也考虑了设计预制件的逆向问题，以便在拉制时得到所需的光纤几何形状。将给出与纤维爆炸和通道关闭相对应的压力标准，这代表了对文献中类似标准的改进。我们的模型与最近的实验进行了比较，以证明建模方法的有效性。我们利用了 Buchak 等人最近的一些工作。 （J. Fluid Mech.，第 778 卷，2015 年，第 5-38 页）检查更复杂的纤维几何形状，其中内部通道的横截面形状假设为椭圆形并且存在多个通道。这里提供的示例展示了我们建模方法的多功能性，即使对于复杂的横截面通道图案，也可以揭示表面张力和加压之间相互作用的微妙之处。
The use of channel pressurisation in drawing microstructured optical fibres (MOFs) potentially allows for fine control of the internal structure of the fibre. By applying extra pressure inside the channels it is possible to counteract the effect of surface tension which would otherwise act to close the channels in the fibre as it is drawn. This paper extends the modelling approach of Stokes et al. (J. Fluid Mech., vol. 755, 2014, pp. 176–203) to include channel pressurisation. This approach treats the problem as two submodels for the flow, one in the axial direction along the fibre and another in the plane perpendicular to that direction. In the absence of channel pressurisation these models decoupled and were solved independently; we show that they become fully coupled when the internal channels are pressurised. The fundamental case of a fibre with an annular cross-section (containing one central channel) will be examined in detail. In doing this we consider both a forward problem to determine the shape of fibre from a known preform and an inverse problem to design a preform such that when drawn it will give a desired fibre geometry. Criteria on the pressure corresponding to fibre explosion and closure of the channel will be given that represent an improvement over similar criteria in the literature. A comparison between our model and a recent experiment is presented to demonstrate the effectiveness of the modelling approach. We make use of some recent work by Buchak et al. (J. Fluid Mech., vol. 778, 2015, pp. 5–38) to examine more complicated fibre geometries, where the cross-sectional shape of the internal channels is assumed to be elliptical and multiple channels are present. The examples presented here demonstrate the versatility of our modelling approach, where the subtleties of the interaction between surface tension and pressurisation can be revealed even for complex patterns of cross-sectional channels.
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DOI：
10.1093/qjmam/53.4.565
发表时间：
2000-11
影响因子：
0.9
作者：
Y. Stokes;E. Tuck;L. Schwartz
通讯作者：
Y. Stokes;E. Tuck;L. Schwartz
影响因子：
1.3
作者：
Fitt, AD;Furusawa, K;Richardson, DJ
通讯作者：
Richardson, DJ
微结构纤维拉丝自加压机构的数学建模
影响因子：
4.7
作者：
C. Voyce;Alistair Fitt;John R. Hayes;T. M. Monro
通讯作者：
T. M. Monro
影响因子：
3.7
作者：
Griffiths, I. M.;Howell, P. D.
通讯作者：
Howell, P. D.
影响因子：
2.8
作者：
Chen, Y.;Birks, T. A.
通讯作者：
Birks, T. A.