公开(公告)号：EP0861215B1

公开(公告)日：2001-10-10

申请号：EP96938269.6

申请日：1996-11-07

Applicant: ALCATEL

Inventor： CHIQUET, Frédéric ,  LE THUAUT, Marylise ,  GIRARD, Jean-Jacques ,  BANIEL, Pascal

IPC: C03B37/012 ,  C03C13/04

CPC classification number: C03B37/02754 ,  C03B37/01211 ,  C03B2201/82 ,  C03B2203/24 ,  C03B2205/14 ,  C03B2205/16 ,  C03C13/042

Abstract: A single-mode preform (2) including a master preform (22) housed in an outer sleeve tube (20) is provided. An intermediate tube (21) between the master preform (22) and the outer tube (20) has a lower viscosity at the fibre drawing temperature than said master preform (22) and said outer tube (20). A method for making a single-mode optical fibre is also provided. The fibre has a more centred and less deformed core than in the prior art. By way of example, an optical amplifier may thus be produced.

公开(公告)号：EP0861215A1

公开(公告)日：1998-09-02

申请号：EP96938269.0

申请日：1996-11-07

Applicant: ALCATEL ALSTHOM COMPAGNIE GENERALE D'ELECTRICITE

Inventor： CHIQUET, Frédéric ,  LE THUAUT, Marylise ,  GIRARD, Jean-Jacques ,  BANIEL, Pascal

IPC: G02B6 ,  C03B37 ,  C03C13

CPC classification number: C03B37/02754 ,  C03B37/01211 ,  C03B2201/82 ,  C03B2203/24 ,  C03B2205/14 ,  C03B2205/16 ,  C03C13/042

Abstract: A single-mode preform (2) including a master preform (22) housed in an outer sleeve tube (20) is provided. An intermediate tube (21) between the master preform (22) and the outer tube (20) has a lower viscosity at the fibre drawing temperature than said master preform (22) and said outer tube (20). A method for making a single-mode optical fibre is also provided. The fibre has a more centred and less deformed core than in the prior art. By way of example, an optical amplifier may thus be produced.