公开(公告)号：JP2000356716A

公开(公告)日：2000-12-26

申请号：JP2000151547

申请日：2000-05-23

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BLYLER LEE L JR ,  HART ARTHUR CLIFFORD JR ,  SALAMON TODD R ,  VIRIYAYUTHAKORN MONTRI

IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028 ,  B29C47/12 ,  G02B6/18

Abstract: PROBLEM TO BE SOLVED: To provide a process for extrusion-molding a graded refractive index plastic optical fiber and an apparatus therefor. SOLUTION: This extrusion molding process has a step of introducing a polymer material for a first core into a first nozzle and a step of introducing a polymer material for a second clad into a second nozzle. At least one polymer material has a dopant having a refractive index for changing the refractive index of the polymer material. The nozzles are concentrically arranged. The first nozzle exists within the second nozzle. When the materials are introduced into a diffusion part 22, the materials simultaneously flow concentrically and the diffusion of the dopant is embodied between the first material and the second material and eventually the graded refractive indices are embodied. The first and second polymer materials move continuously through the diffusion part 22 and flows through an outlet side die and are then drawn out as a fiber.

公开(公告)号：BR0002427A

公开(公告)日：2001-01-02

申请号：BR0002427

申请日：2000-05-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BLYLER LEE L JR ,  HART ARTHUR CLIFFORD JR ,  VIRIYAYUTHAKORN MONTRI ,  SALAMON TODD R

IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028

Abstract: A continuous extrusion process is provided capable of producing graded index plastic optical fiber at commercially useful speeds, e.g., at least 1 m/sec for 250 mu m outer diameter fiber. Moreover, it is possible to predict the refractive index profile of the fiber, prior to actual fabrication, by performing a finite element analysis using various parameters of the extrusion process. Such prediction allows one to tune the parameters of the process to obtain a desirable outcome, while avoiding the need for substantial trial and error with the extrusion equipment.

公开(公告)号：AU3535900A

公开(公告)日：2000-11-30

申请号：AU3535900

申请日：2000-05-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BLYLER LEE L JR ,  HART ARTHUR CLIFFORD JR ,  SALAMON TODD R ,  VIRIYAYUTHAKORN MONTRI

IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028

Abstract: A continuous extrusion process is provided capable of producing graded index plastic optical fiber at commercially useful speeds, e.g., at least 1 m/sec for 250 mu m outer diameter fiber. Moreover, it is possible to predict the refractive index profile of the fiber, prior to actual fabrication, by performing a finite element analysis using various parameters of the extrusion process. Such prediction allows one to tune the parameters of the process to obtain a desirable outcome, while avoiding the need for substantial trial and error with the extrusion equipment.

公开(公告)号：CA2308661A1

公开(公告)日：2000-11-27

申请号：CA2308661

申请日：2000-05-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SALAMON TODD R ,  HART ARTHUR CLIFFORD JR ,  BLYLER LEE L JR ,  VIRIYAYUTHAKORN MONTRI

IPC: G02B6/00 ,  B29C47/00 ,  B29C47/04 ,  B29C47/06 ,  B29C48/30 ,  B29D11/00 ,  G02B6/028 ,  C08J5/00 ,  G02B6/18

Abstract: A continuous extrusion process is provided capable of producing graded index plastic optical fiber at commercially useful speeds, e.g., at least 1 m/sec for 250 .mu.m outer diameter fiber. Moreover, it is possible to predict the refractive index profile of the fiber, prior to actual fabrication, by performing a finite element analysis using various parameters of the extrusion process. Such prediction allows one to tune the parameters of the process to obtain a desirable outcome, while avoiding the need for substantial trial and error with the extrusion equipment.