Method of coating optical fibers

Details Method of coating optical fibers Method of coating optical fibers

1989-06-05

1990-08-21

Lee, John D.

350 9633, G02B 644

Patent

active

049500473

ABSTRACT:
This invention relates to a method of drawing twist-free optical fibers; it is particularly useful for drawing polarization retaining single-mode optical fibers having azimuthal inhomogeneities. There is applied to the fiber, during the drawing thereof, a coating having a non-circular cross-section, the azimuthal inhomogeneity of the fiber being positioned in a substantially constant orientation with respect to the non-circular cross-section of the coating. In another embodiment, a plurality of fibers having azimuthal inhomogeneities are drawn from a plurality of preforms that are properly oriented in the draw furnace. The fibers are drawn through the same coater so that the azimuthal inhomogeneity of each fiber is oriented in a substantially constant relationship with respect to the azimuthal inhomogeneities of the remaining fibers in the coating.

REFERENCES:
patent: 4669814 (1987-06-01), Dyott
patent: 4712866 (1987-12-01), Dyott
patent: 4741594 (1988-05-01), Suzuki

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