Process for low attenuation methacrylate optical fiber

Details Process for low attenuation methacrylate optical fiber Process for low attenuation methacrylate optical fiber

1977-10-14

1979-07-17

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264174, 428373, 5263297, D02G 300, B32B 2700

Patent

active

041615000

ABSTRACT:
Low attenuation, all-plastic optical fiber is made by using starting materials which are rigorously purified to remove light-absorbing impurities and solid particles of dirt, polymerizing the core monomer under pressure with a heating schedule which leads to at least 98% conversion to polymer as a cylindrical preform, and ram extruding the core of the optical fiber while melting only the forward end of the preform of core polymer so as to preclude contamination of the core by dirt or formation of bubbles by polymer degradation. Optical fibers so made exhibit light attenuations as low as 300 dB/km or lower.

REFERENCES:
patent: 2008719 (1935-07-01), Kuettel
patent: 2045660 (1936-06-01), Loder
patent: 3154600 (1964-10-01), Munn
patent: 3930103 (1975-12-01), Chimura et al.
patent: 3993834 (1976-11-01), Chimura et al.
patent: 3999834 (1976-12-01), Ohtomo et al.
Balke et al., J. of Polymer Sci., vol. 17, pp. 905-949 (1973): "Bulk Polym. of Methyl Methacrylate".
Cardenas et al., J. of Poly. Sci. (Polym. Chem Ed.), vol. 14, 883-897 (1976): "High Conv. Polym. I".

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