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Cooling and bubble-free coating of optical fibers at a high drawing rate

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2 Author(s)
Jochem, C.M.G. ; Philips Research Laboratories, Eindhoven, The Netherlands ; van der Ligt, J.

For economic reasons, the drawing rate of optical fibers should be as high as possible. However, a high drawing rate introduces problems with respect to on-line coating of the fiber such as insufficient cooling down of the fiber before coating and application of an absolutely bubble-free concentric coating layer. A cooling device and a force-feed coating applicator are described that enable proper coating of fibers at speeds of at least 700 m/min using a short drawing tower.

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Lightwave Technology, Journal of  (Volume:4 ,  Issue: 7 )