Optical waveguides – Optical fiber waveguide with cladding – Utilizing multiple core or cladding
Patent
1995-06-05
1996-09-17
Lee, John D.
Optical waveguides
Optical fiber waveguide with cladding
Utilizing multiple core or cladding
385100, 385141, G02B 644, G02B 652
Patent
active
055577032
ABSTRACT:
An optical fibre package suitable for installation using a fibre blowing process includes at least one optical fibre, an inner coating about said fibre, and an outer resin coating about said inner coating, said resin coating including a significant plurality of particulate inclusions at least 10 .mu.m across, wherein the concentration of the particulate inclusions is significantly greater at the outer surface of the resin coating than at the inner limit of the resin coating. The inclusions may be hollow glass microspheres or mica flakes. The relative absence of significant particulate inclusions at the inner limit of the resin coating improves the mechanical particulate of the fibre package relative to similar known packages. The presence of significant inclusions at the outer surface of the resin coating tends, during a blowing process, to increase viscous drag effects and to reduce friction between the package and the duct into which the package is blown, thereby enhancing blowability.
REFERENCES:
patent: 5042907 (1991-08-01), Bell et al.
patent: 5109456 (1992-04-01), Sano et al.
Suzuki et al, "Fine and tough Optical Cords with Polyetherimide Coated Fibers", 5th International Conference on Plastics in Telecommunications, 1989, London, pp. 12/1-12/7. [No Month].
Barker Philip A.
Fisk Christopher
Jenkins Peter D.
Stockton David J.
British Telecommunications public limited company
Lee John D.
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