公开(公告)号：ZA9609529B

公开(公告)日：1997-06-17

申请号：ZA9609529

申请日：1996-11-13

Applicant: ALSTHOM CGE ALKATEL

Inventor： CHIQUET FREDERIC ,  THUAUT MARYLISE LE ,  GIRARD JEAN-JACQUES ,  BANIEL PASCAL

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/027 ,  C03C13/04 ,  G02B6/02 ,  C03B ,  C03C

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

公开(公告)号：ZA969529B

公开(公告)日：1997-06-17

申请号：ZA969529

申请日：1996-11-13

Applicant: ALSTHOM CGE ALKATEL

Inventor： CHIQUET FREDERIC ,  THUAUT MARYLISE LE ,  GIRARD JEAN-JACQUES ,  BANIEL PASCAL

IPC: C03B37/012 ,  C03B37/027 ,  G02B6/00 ,  C03C13/04 ,  G02B6/02 ,  C03B ,  C03C

Abstract: The invention provides a monomode optical fiber and a monomode preform (2) having a mother preform (22) housed in an outer sleeve tube (20). It is characterized in that it also includes an intermediate tube (21) between the mother preform (22) and the outer tube (20), the intermediate tube (21) possessing viscosity at fiber-drawing temperature which is less than the viscosity(ies) at fiber-drawing temperature of the mother preform (22) and of the outer tube (20). The invention also provides a method of manufacturing a monomode optical fiber. The fiber has a core that is better centered and less deformed than in the prior art. An application of the invention lies in making an optical amplifier.