公开(公告)号：US20240279104A1

公开(公告)日：2024-08-22

申请号：US18340870

申请日：2023-06-25

Applicant: Sterlite Technologies Limited

Inventor： RANJITH BALAKRISHNAN ,  Rano Roy Kavanal ,  Anant Pawale ,  Rajendra Raut ,  Srinivas Reddy Munige ,  Anand Pandey

IPC: C03B37/025

CPC classification number: C03B37/0253 ,  C03B2203/02 ,  C03B2205/40 ,  C03B2205/90

Abstract: The present invention relates to a method (200, 400, 500, 600) for drawing a bare optical fiber (118) from a cylindrical glass preform (102) in a furnace chamber (104) by hanging the cylindrical glass preform (102) near a first end (104a) of the furnace chamber (104), 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 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).