УДК: 666.189.21, 666.2, 532.516.5

Modeling the swelling process of fused quartz capillaries in the high-temperature furnace of drawing apparatus

Makovetskiy, A.A., Zamyatin, A.A., Ivanov, G.A.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Маковецкий А.А., Замятин А.А., Иванов Г.А. Моделирование процесса раздутия запаянных кварцевых капилляров в высокотемпературной печи вытяжной установки // Оптический журнал. 2017. Т. 84. № 12. С. 87–94.

Makovetskiy A.A., Zamyatin A.A., Ivanov G.A. Modeling the swelling process of fused quartz capillaries in the high-temperature furnace of drawing apparatus [in Russian] // Opticheskii Zhurnal. 2017. V. 84. № 12. P. 87–94.

For citation (Journal of Optical Technology):

A. A. Makovetskiĭ, A. A. Zamyatin, and G. A. Ivanov, "Modeling the swelling process of fused quartz capillaries in the high-temperature furnace of drawing apparatus," Journal of Optical Technology. 84(12), 864-870 (2017). https://doi.org/10.1364/JOT.84.000864

Abstract:

Using the discrete model proposed earlier, the swelling of a fused quartz capillary in a high-temperature (HT) furnace with an arbitrary axial temperature profile is studied by numerical methods. Two regimes of this process are considered—swelling with the capillary stationary in the HT furnace, and swelling as it is stepwise fed into the HT furnace with constant or variable delays per step. The influence of the capillary’s heating time on the kinetics of the swelling process is taken into account. The given model is the theoretical basis for choosing capillary bonding regimes in capillary assemblies—blanks for microstructured optical fibers. The theoretical results for swollen quartz capillaries are experimentally verified for various structures of capillary assemblies; this is important for practical applications.

Keywords:

quartz capillary, capillary discrete model, high-temperature furnace, swelling of fused capillary, capillary bonding in capillary assemblies

OCIS codes: 220.0220

References:

1. J. C. Knight, T. A. Birks, P. St. J. Russel, and D. M. Atkin, “All-silica-single-mode fiber with photonic crystal cladding,” Opt. Lett. 21(19), 1547–1549 (1996).
2. T. M. Monro, D. J. Richardson, N. G. R. Broderick, and P. J. Bennet, “Holey optical fibers: efficient modal model,” J. Lightwave Technol. 17(6), 1092–1102 (1999).
3. P. St. J. Russel, “Photonic-crystal fibers,” J. Lightwave Technol. 14(12), 4729–4747 (2006).
4. A. A. Zamyatin and A. A. Makovetskiı˘, “Swelling of fused capillaries in capillary assemblies,” J. Opt. Technol. 73(1), 55–60 (2006) [Opt. Zh. 73(1), 66–72 (2006)].
5. A. A. Makovetskiı˘, “Discrete model of the swelling of a fused capillary in a high-temperature furnace with a nonuniform axial temperature profile,” Prikl. Mekh. Tekh. Fiz. 52(6), 5–12 (2011).
6. G. Urbain, Y. Bottinga, and P. Richet, “Viscosity of liquid silica, silicates and alumino-silicates,” Geochim. Cosmochim. Acta. 46, 1061–1072 (1982).
7. M. I. Ojovan and W. E. Lee, “Viscosity of network liquids within Doremus approach,” J. Appl. Phys. 95(7), 3803–3810 (2004).
8. K. Boyd, H. Ebendorff-Heidepriem, T. M. Monro, and J. Munch, “Surface tension and viscosity measurement of optical glasses using a scanning CO 2 laser,” Opt. Mater. Express 2(8), 1101–1110 (2012).