公开(公告)号：WO2021225802A2

公开(公告)日：2021-11-11

申请号：PCT/US2021/028810

申请日：2021-04-23

Applicant: CORNING INCORPORATED

Inventor： DAWES, Steven Bruce ,  TANDON, Pushkar

IPC: C03B37/023 ,  C03B37/027 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2205/42 ,  C03B2205/55 ,  C03B37/0235 ,  C03B37/0253 ,  C03B37/02718 ,  C03B37/02727 ,  C03B37/029

Abstract: A method of processing an optical fiber includes drawing the optical fiber from an optical fiber preform within a draw furnace, the optical fiber extending from the draw furnace along a process pathway, the optical fiber comprising at least one halogen-doped core; and drawing the optical fiber through at least one slow cooling device positioned downstream from the draw furnace at a draw speed. The at least one slow cooling device exposes the optical fiber to a slow cooling device process temperature greater than or equal to 800 °C and less than or equal to 1600 °C. The draw speed is such that the optical fiber has a residence time of at least 0.1 s in the at least one slow cooling device. An optical fiber made by such a process is also disclosed.

公开(公告)号：WO2021126533A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/062964

申请日：2020-12-03

Applicant: CORNING INCORPORATED

Inventor： DUNWOODY, Steven Akin ,  KLADIAS, Nikolaos Pantelis ,  MOORE, Robert Clark ,  PACE, Jason Roy ,  THOMAS, Christopher Scott ,  WAKEFIELD, Bryan William ,  ZHOU, Chunfeng

IPC: C03B37/027 ,  C03B37/029 ,  C03B2205/42 ,  C03B2205/50 ,  C03B2205/55 ,  C03B2205/57 ,  C03B2205/61 ,  C03B2205/83 ,  C03B37/02718

Abstract: A system for processing optical fiber includes a draw furnace, a fiber conveyance pathway extending between an upstream end positioned at the draw furnace and a downstream end positioned opposite the upstream end, where optical fiber is conveyed along the fiber conveyance pathway from the upstream end to the downstream end in a fiber conveyance direction, a muffle in communication with the draw furnace and positioned downstream of the draw furnace, a second cooling device annularly surrounding the fiber conveyance pathway downstream from the draw furnace, the second cooling device including one or more second cooling device heating elements and a first cooling device positioned between the draw furnace and the second cooling device, wherein the first cooling device directs a fluid to contact the optical fiber.