Enlarging and sintering of the two ends sealed capillaries in capillary stacks for microstructured optical fibers

Gennady A. Ivanov; Aleksander A. Makovetskii; Aleksander A. Zamyatin

doi:10.1117/12.802302

29 April 2008 Enlarging and sintering of the two ends sealed capillaries in capillary stacks for microstructured optical fibers

Gennady A. Ivanov, Aleksander A. Makovetskii, Aleksander A. Zamyatin

Author Affiliations +

Proceedings Volume 7006, Lasers for Measurements and Information Transfer 2007; 70060T (2008) https://doi.org/10.1117/12.802302
Event: Lasers for Measurements and Information Transfer 2007, 2007, St. Petersburg, Russian Federation

Abstract

The problem of enlarging a locally heated a two ends sealed silica capillary is considered. Within the model of a Newtonian fluid for radial flow, an equation is obtained that describes the enlarging kinetics of a molten region of a capillary. The maximal diameter of enlarging is investigated as a function of the geometric parameters of the capillary, the reduced length of the heated region, and its temperature and viscosity. Theoretical results obtained are verified by enlarging isolated silica capillaries in the high-temperature furnace of the fiber-drawing machine. Capillaries are enlarged either in the static regime or when they are fed into the heating zone at a constant speed. These capillaries were used to test various sintering regimes for the capillary stacks for microstructured optical fibers. Samples of microstructured optical fibers, including active fibers, are drawn from these sintered capillary stacks.

Citation Download Citation

Gennady A. Ivanov, Aleksander A. Makovetskii, and Aleksander A. Zamyatin "Enlarging and sintering of the two ends sealed capillaries in capillary stacks for microstructured optical fibers", Proc. SPIE 7006, Lasers for Measurements and Information Transfer 2007, 70060T (29 April 2008); https://doi.org/10.1117/12.802302

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