Controlling the drawing rollers to produce diameter perturbation

Details Controlling the drawing rollers to produce diameter perturbation Controlling the drawing rollers to produce diameter perturbation

1977-11-21

1979-08-07

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 13, 65DIG7, 264 1, 350 9630, C03B 3700

Patent

active

041633709

ABSTRACT:
An optical waveguide having variations in diameter is produced by controlling the drawing rollers. Predetermined diameter variations along the length of an optical waveguide reduce dispersion in multimode waveguides. These diameter variations are produced by varying the rotational speed of the pulling rollers, by varying the diameter of the pulling rollers, by moving the pulling rollers axially or by moving a tensioning roller during the drawing process.

REFERENCES:
patent: 2666976 (1954-01-01), Olmer et al.
patent: 2847703 (1958-08-01), Schrenk et al.
patent: 3819344 (1974-06-01), Thumm
patent: 3912478 (1975-10-01), Presby
patent: 4028081 (1977-06-01), Marcatili
patent: 4038062 (1977-07-01), Presby

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