{{Short description|Drawing optical fiber}} {{Use American English|date=March 2023}} {{Use mdy dates|date=March 2023}} A '''drawing tower''' produces a fine glass filament by drawing a glass preform. The tip of the preform is heated to melting temperature and then a strand of molten material is pulled downward.<ref>{{cite journal |title=Specialty optical fiber fabrication: fiber draw tower based on a CO laser furnace|year=2021 |doi=10.1364/JOSAB.437667|last1=Harvey |first1=Clarissa M. |last2=Mühlberger |first2=Korbinian |last3=Oriekhov |first3=Taras |last4=Maniewski |first4=Pawel |last5=Fokine |first5=Michael |journal=Journal of the Optical Society of America B |volume=38 |issue=12 |pages=F122 |bibcode=2021JOSAB..38F.122H |s2cid=240084874 }}</ref> Industrial drawing towers range in height from 30 to 45 meters. A drawing tower is used in the production of optical fiber, for example for fiber-optic communication cables. The preform is a multi-layered cylinder typically 20 cm in diameter, and 2 m long.<ref>{{cite web |title=The optical fiber draw tower |url=https://www.cersa-mci.com/products/optical-fibers/optical-fiber-draw-tower/ |access-date=March 2, 2023}}</ref>
==References== {{reflist}}
Category:Fiber optics
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