METHOD FOR DRAWING AN OPTICAL FIBER

METHOD FOR DRAWING AN OPTICAL FIBER

The present disclosure relates to a method (200, 400, 500, 600) for drawing a bare optical fiber (118) from a cylindrical glass preform (102). It includes injecting first and second inert gasses inside the furnace chamber (104) in a predefined ratio of 0.3 to 5, and melting the cylindrical glass pre...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Raut, Rajendra, Pawale, Anant, Munige, Srinivas Reddy, Balakrishnan, Ranjith, Pandey, Anand K, Kavanal, Rano Roy
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Beschreibung
Zusammenfassung:The present disclosure relates to a method (200, 400, 500, 600) for drawing a bare optical fiber (118) from a cylindrical glass preform (102). It includes injecting first and second inert gasses inside the furnace chamber (104) in a predefined ratio of 0.3 to 5, and melting the cylindrical glass preform (102) while maintaining a positive pressure in the furnace chamber (104) to form the bare optical fiber (118) such that a short term Bare Fiber Diameter (BFD) variation of the bare optical fiber (118) is less than 0.1 micrometers (µm) from a mean diameter of the bare optical fiber (118). Long term variations of BFD are controlled via small adjustments of feed speed of less than 0.3 mm per minute.