公开(公告)号：JP2002097033A

公开(公告)日：2002-04-02

申请号：JP2001231160

申请日：2001-07-31

Applicant: LUCENT TECHNOLOGIES INC

Inventor： FLEMING JAMES WILLIAM JR ,  KAKAR SANDEEP ,  LUM RICHARD M ,  MONBERG ERIC M

IPC: C03B37/012 ,  C03B37/016

Abstract: PROBLEM TO BE SOLVED: To provide an improved technology for drawing an optical fiber from a preform which is assembled by using a sol-gel over-cladding pipe. SOLUTION: This technology provides a core-rod and a core-rod assembly having a bushing installed on its end. The core-rod assembly is inserted into, hung, and fixed to the over-cladding pipe 20 which is not yet sintered. Both of the assembly and the pipe are heated to sinter the pipe, which results in the formation of a preform assembly. This assembly is arranged to the drawing tower by the drawing handle 14 mounted on it and is drawn for a formation of an optical fiber by over-cladding.

公开(公告)号：CA2350275A1

公开(公告)日：2002-02-01

申请号：CA2350275

申请日：2001-06-12

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MONBERG ERIC M ,  KAKAR SANDEEP ,  LUM RICHARD M ,  FLEMING JAMES WILLIAM JR

IPC: C03B37/012 ,  C03B37/016 ,  G02B6/16

Abstract: An improved technique for assembling and drawing fiber from preforms is provided. In one embodiment, the technique involves providing a core rod assembly comprising a core rod and a bushing attached at an end of the assembly. The core rod assembly is inserted into an unsintered overcladding tube, and secured to the tube such that the core rod assembly is suspended within. The overcladding tube and the core rod assembly are heated to sinter the overcladding tube and thereby form a preform assembly. During the heating step, the bushing comes into contact with the interior of the overcladding tube, and, because the bushing has a larger diameter than the core rod, an annular gap is maintained between the core rod assembly and the interior of the overcladding tube. It is then possible to attach a draw handle to the preform assembly, place the preform assembly into a draw tower, and draw fiber from the preform assembly by an overclad during draw technique.