公开(公告)号：US20240360024A1

公开(公告)日：2024-10-31

申请号：US18637553

申请日：2024-04-17

Applicant: CORNING INCORPORATED

Inventor： Steven Treavis Arndt ,  Raymond David Groh ,  Ashley Anne Holman ,  Spencer Thomas Kingsbury

IPC: C03B37/018 ,  C03B37/03

CPC classification number: C03B37/01846 ,  C03B37/01853 ,  C03B37/032

Abstract: A method of manufacturing including: (a) a first vapor deposition step comprising vapor depositing a first porous glass body of a glass former and a doping constituent onto a substrate; (b) a cleaning step after the first vapor deposition step, the cleaning step comprising exposing the first porous glass body to a cleaning gas at a cleaning temperature for a cleaning period of time, the cleaning gas (i) removing a metal or metal oxide from the first porous glass body, (ii) changing an oxidation state of a metal or metal oxide within the first porous glass body, or (iii) a combination of (i) and (ii); and (c) a second vapor deposition step after the cleaning step, the second vapor deposition step comprising vapor depositing a second porous glass body of the glass former onto the first porous glass body resulting in a porous preform for an optical fiber.

公开(公告)号：US20240360025A1

公开(公告)日：2024-10-31

申请号：US18638912

申请日：2024-04-18

Applicant: CORNING INCORPORATED

Inventor： Steven Treavis Arndt ,  Ilia Andreyevich Nikulin ,  Nikolay Anatolyevich Panin ,  Sergey Nikolaevich Shubin

IPC: C03B37/018 ,  C03B37/027

CPC classification number: C03B37/01853 ,  C03B37/027

Abstract: A method of manufacturing including: with a porous glass body having a surface and a density at the surface having been loaded into a furnace with heating elements disposed along a length of the porous glass body, a first heat treatment step comprising activating the heating elements until the porous glass body at an inner surface of the porous glass body facing a centerline of the porous glass body has a first temperature that is greater than or equal to 1250° C. for a first period of time greater than or equal to 1 hour; wherein, as a result of the first heat treatment step, the density of the porous glass body at the surface increases but is less than 85% of a closed pore density of a sintered glass preform made from the porous glass body.