Optical fiber having polymethacrylate core and fluoro-copolymer

Details Optical fiber having polymethacrylate core and fluoro-copolymer Optical fiber having polymethacrylate core and fluoro-copolymer

1985-07-11

1987-08-18

Wise, Robert E.

350 9629, G02B 600

Patent

active

046872957

ABSTRACT:
The invention relates to an optical fiber of the step-index type in which the core material is poly(methyl methacrylate) or a copolymer of methyl methacrylate with another methacrylate or an acrylate. A copolymer of vinylidene fluoride with hexafluoroacetone is employed as the cladding material which makes good adhesion to the polymethacrylate core. When the amount of hexafluoroacetone is 4-20 mole %, the copolymer is low in crystallinity, high in transparency, appropriately low in refrax index and higher than 100.degree. C. in softening temperature, and can be extruded under the conditions suited to extrusion of poly(methyl methacrylate).

REFERENCES:
patent: 3993834 (1976-11-01), Chimura et al.
patent: 4264129 (1981-04-01), Warkentine
patent: 4381269 (1983-04-01), Kaino et al.
patent: 4505543 (1985-03-01), Ueba et al.
patent: 4542957 (1985-09-01), Ishiwari et al.
patent: 4544235 (1985-10-01), Nishida et al.
patent: 4552431 (1985-11-01), Allemand et al.
patent: 4564263 (1986-01-01), Ueba et al.
patent: 4566755 (1986-01-01), Ohmori et al.
patent: 4593974 (1986-06-01), Yamamoto et al.

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