公开(公告)号：DE69311841T2

公开(公告)日：1998-02-12

申请号：DE69311841

申请日：1993-04-26

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  SPICER HENRY ANTHONY ,  HAWTOF DANIEL WARREN

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform (10) which is heated in a draw furnace (12). Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.

公开(公告)号：DE69311841D1

公开(公告)日：1997-08-07

申请号：DE69311841

申请日：1993-04-26

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  SPICER HENRY ANTHONY ,  HAWTOF DANIEL WARREN

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform (10) which is heated in a draw furnace (12). Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.

公开(公告)号：CA2084258C

公开(公告)日：2003-07-15

申请号：CA2084258

申请日：1992-12-01

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  HAWTOF DANIEL WARREN ,  SPICER HENRY ANTHONY

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform which is heated in a draw furnace. Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.

公开(公告)号：DE69311841T3

公开(公告)日：2003-09-18

申请号：DE69311841

申请日：1993-04-26

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  SPICER HENRY ANTHONY ,  HAWTOF DANIEL WARREN

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform (10) which is heated in a draw furnace (12). Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.

公开(公告)号：AU661135B2

公开(公告)日：1995-07-13

申请号：AU3715793

申请日：1993-04-27

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  HAWTOF DANIEL WARREN ,  SPICER HENRY ANTHONY

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/025

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform (10) which is heated in a draw furnace (12). Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.

公开(公告)号：AU3715793A

公开(公告)日：1993-11-04

申请号：AU3715793

申请日：1993-04-27

Applicant: CORNING INC

Inventor： HARVEY JILL ANN ,  HAWTOF DANIEL WARREN ,  SPICER HENRY ANTHONY

IPC: G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/025

Abstract: A method and apparatus for drawing an optical waveguide fiber which minimizes fiber bow caused by differential stresses in the cladding layer of the fiber are disclosed. The fiber is drawn from a preform (10) which is heated in a draw furnace (12). Gases introduced at the top of the furnace form a boundary layer adjacent to the fiber which passes through the furnace, along with the fiber, into a tube. The tube isolates the fiber from the ambient atmosphere so that the boundary layer of gases established in the furnace remains substantially uniform until the viscosity of the cladding layer of the fiber is high enough to minimize differential stresses around the circumference of the fiber.