Plastic optical fiber preform having a jacket layer

Details Plastic optical fiber preform having a jacket layer Plastic optical fiber preform having a jacket layer

1997-04-14

1999-04-06

Dixon, Merrick

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428403, 264 14, 264 15, 264 27, 2642711, 427296, D02G 300

Patent

active

058915702

ABSTRACT:
A process and an apparatus for producing a preform for plastic optical fiber having a refractive index distribution in which the refractive index is gradually decreased from the center of the preform toward the outer periphery thereof, by depositing a deposition layer comprising a polymer A (refractive index: N.sub.a) and a refractive index modifier having a refractive index different from that of the polymer A onto a surface of a rod member rotating about an axis thereof, by use of vapor-phase deposition based on a CVD (Chemical Vapor Deposition) process, or a coating process. A plastic optical fiber preform including deposition layers having a gradually decreasing refractive index distribution is formed by changing the mixing ratio between the polymer A and the refractive index modifier constituting the deposition layer.

REFERENCES:
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patent: 4692347 (1987-09-01), Yasuda
patent: 4937029 (1990-06-01), Ishiharada et al.
patent: 5182783 (1993-01-01), Bose et al.
Ishigure et al., "Improvements in optical loss of High Bandwidth GI Polymer Optical Fiber," Polymer Preprints, Japan, vol. 41, No. 7 (1992), pp. 2942-2944.

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