Asymptotic Analysis of Flow Processes at Drawing of Single Optical Microfibres

Luzi, Giovanni; Epple, Philipp; Scharrer, Michael; Fujimoto, Ken; Rauh, Cornelia; Delgado, Antonio

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Asymptotic Analysis of Flow Processes at Drawing of Single Optical Microfibres

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Scharrer, Michael
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Luzi, G., Epple, P., Scharrer, M., Fujimoto, K., Rauh, C., & Delgado, A. (2011). Asymptotic Analysis of Flow Processes at Drawing of Single Optical Microfibres. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, 9: A65.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-6A51-C

Abstract

Microstructured optical fibres (i.e. fibres that contain holes) have assumed a high profile in recent years, and given rise to many novel optical devices. The problem of manufacturing such fibres by heating and then drawing a preform is considered for both the cases of annular microfibres and annular capillaries. A fluid-mechanics model suggested in literature that uses asymptotic analysis based on the small aspect ratio of capillaries is analysed and revised. The leading-order equations are examined in some asymptotic limits, many of which give valuable practical information about the control parameters that influence the drawing process. Additionally, the solution obtained for a single capillary provides a suitable basis for describing more complicated fibre structures.