公开(公告)号：DE69802881T2

公开(公告)日：2002-08-08

申请号：DE69802881

申请日：1998-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR ,  PAFCHEK ROBERT M

IPC: G02B6/00 ,  B01J19/08 ,  C03B20/00 ,  C03B29/02 ,  C03B37/012 ,  C03B37/014 ,  C03C23/00 ,  C03C25/62 ,  C03B32/00 ,  C04B41/00

公开(公告)号：DE69706363T2

公开(公告)日：2002-05-23

申请号：DE69706363

申请日：1997-05-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR

IPC: G02B6/00 ,  C03B23/043 ,  C03B23/045 ,  C03B37/027 ,  C03B37/029

Abstract: The optical fibre preform is rotated about its longitudinal axis while a fibre is drawn from it. The preform is heated by directing onto it a plasma torch that is reciprocated axially over part of its length.

公开(公告)号：DE60010054T2

公开(公告)日：2004-10-14

申请号：DE60010054

申请日：2000-11-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR ,  ZYDZIK GEORGE JOHN

IPC: C03B23/043 ,  C03B23/047 ,  C03B23/049 ,  C03B37/012 ,  C03B37/027

Abstract: A silica-based core rod is traversed by a heat source along its longitudinal axis, to provide heated, softened regions. During the traverse, compressive or tensile movements are provided along the rod's longitudinal axis, these movements inducing, respectively, increases or decreases in the core diameter at the softened regions. By providing selective core diameter increases and/or decreases across the entire length of the core rod, a desired core diameter profile is attained. It is possible to attain a substantially uniform core diameter, or a varying core diameter profile that provides particular properties, such as systematically varying dispersion. In addition, due to the ability to increase core diameter and core rod diameter in a controlled manner, it is possible to make larger core rods, and in turn larger fiber preforms, than presently possible. The so formed core rod is inserted into an overcladding tube and drawn to an optical fiber after collapse of the tube onto the core rod.

公开(公告)号：DE60010054D1

公开(公告)日：2004-05-27

申请号：DE60010054

申请日：2000-11-20

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR ,  ZYDZIK GEORGE JOHN

IPC: C03B23/043 ,  C03B23/047 ,  C03B23/049 ,  C03B37/012 ,  C03B37/027

Abstract: A silica-based core rod is traversed by a heat source along its longitudinal axis, to provide heated, softened regions. During the traverse, compressive or tensile movements are provided along the rod's longitudinal axis, these movements inducing, respectively, increases or decreases in the core diameter at the softened regions. By providing selective core diameter increases and/or decreases across the entire length of the core rod, a desired core diameter profile is attained. It is possible to attain a substantially uniform core diameter, or a varying core diameter profile that provides particular properties, such as systematically varying dispersion. In addition, due to the ability to increase core diameter and core rod diameter in a controlled manner, it is possible to make larger core rods, and in turn larger fiber preforms, than presently possible. The so formed core rod is inserted into an overcladding tube and drawn to an optical fiber after collapse of the tube onto the core rod.

公开(公告)号：DE69802881D1

公开(公告)日：2002-01-24

申请号：DE69802881

申请日：1998-09-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR ,  PAFCHEK ROBERT M

IPC: G02B6/00 ,  B01J19/08 ,  C03B20/00 ,  C03B29/02 ,  C03B37/012 ,  C03B37/014 ,  C03C23/00 ,  C03C25/62 ,  C03B32/00 ,  C04B41/00

公开(公告)号：DE69706363D1

公开(公告)日：2001-10-04

申请号：DE69706363

申请日：1997-05-19

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JR

IPC: G02B6/00 ,  C03B23/043 ,  C03B23/045 ,  C03B37/027 ,  C03B37/029

Abstract: The optical fibre preform is rotated about its longitudinal axis while a fibre is drawn from it. The preform is heated by directing onto it a plasma torch that is reciprocated axially over part of its length.