Abstract

Today, the number of services, which includes large information contents like high-definition movies, is rapidly increasing. The graded-index plastic optical fiber (GI-POF) has been proposed as a solution. The conventional fabrication method of GI-POF, however, is unsuitable for mass production. Therefore, we propose the dopant diffusion coextrusion process for fabricating high-bandwidth GI-POF. It has been generally thought that formation mechanism of refractive-index distribution in optical polymer materials by this process would be a Fick's diffusion with constant diffusion coefficient and, therefore, has a tailing part at the core–cladding boundary. Contrary to predictions, we succeed in fabricating GI-POF with an almost optimum-index distribution. It is made evident by experiments and simulation that the formation mechanism of GI-POF by this process is a Fick's diffusion with diffusion coefficient dependent on dopant concentration. These results indicate high possibility of fabrication of high-bandwidth fibers of a polymethyl methacrylate–diphenyl sulfide system by the dopant diffusion coextrusion process.

© 2007 IEEE

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References

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  1. Y. Koike, T. Ishigure, E. Nihei, "High-bandwidth graded-index polymer optical fiber," J. Lightw. Technol. 13, 1475-1489 (1995).
  2. T. Ishigure, Y. Koike, J. W. Fleming, "Optimum index profile of the perfluorinated polymer-based GI polymer optical fiber and its dispersion properties," J. Lightw. Technol. 18, 178-184 (2000).
  3. I.-S. Sohn, C.-W. Park, "Preparation of graded-index plastic optical fibers by the diffusion-assisted coextrusion process ," Ind. Eng. Chem. Res. 41, 2418-2424 (2002).
  4. A. Takizawa, Computer de Miru Koubunnshizairyoutyuuno Bussituidouronn pp. 56-58 (1994).
  5. C. Matano, "On the relation between the diffusion coefficients and concentrations of slid materials (the nickel-copper system)," Jpn. J. Phys. 8, 109-113 (1933).

2002

I.-S. Sohn, C.-W. Park, "Preparation of graded-index plastic optical fibers by the diffusion-assisted coextrusion process ," Ind. Eng. Chem. Res. 41, 2418-2424 (2002).

2000

T. Ishigure, Y. Koike, J. W. Fleming, "Optimum index profile of the perfluorinated polymer-based GI polymer optical fiber and its dispersion properties," J. Lightw. Technol. 18, 178-184 (2000).

1995

Y. Koike, T. Ishigure, E. Nihei, "High-bandwidth graded-index polymer optical fiber," J. Lightw. Technol. 13, 1475-1489 (1995).

1933

C. Matano, "On the relation between the diffusion coefficients and concentrations of slid materials (the nickel-copper system)," Jpn. J. Phys. 8, 109-113 (1933).

Ind. Eng. Chem. Res.

I.-S. Sohn, C.-W. Park, "Preparation of graded-index plastic optical fibers by the diffusion-assisted coextrusion process ," Ind. Eng. Chem. Res. 41, 2418-2424 (2002).

J. Lightw. Technol.

Y. Koike, T. Ishigure, E. Nihei, "High-bandwidth graded-index polymer optical fiber," J. Lightw. Technol. 13, 1475-1489 (1995).

T. Ishigure, Y. Koike, J. W. Fleming, "Optimum index profile of the perfluorinated polymer-based GI polymer optical fiber and its dispersion properties," J. Lightw. Technol. 18, 178-184 (2000).

Jpn. J. Phys.

C. Matano, "On the relation between the diffusion coefficients and concentrations of slid materials (the nickel-copper system)," Jpn. J. Phys. 8, 109-113 (1933).

Other

A. Takizawa, Computer de Miru Koubunnshizairyoutyuuno Bussituidouronn pp. 56-58 (1994).

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